characterization of selected radionuclides in … · 2011. 1. 26. · characterization of selected...

CHARACTERIZATION OF SELECTED RADIONUCLIDES IN SEDIMENT AND SURFACE WATER IN STANDLEY LAKE, GREAT WESTERN RESERVOIR, AND MOWER RESERVOIR, JEFFERSON COUNTY, COLORADO, 1992

by David W. Clow and David A. Johncox

U.S. GEOLOGICAL SURVEY

Water-Resources Investigations Report 95-4126

Prepared in cooperation with the

U.S. DEPARTMENT OF ENERGY

Denver, Colorado 1995

U.S. DEPARTMENT OF THE INTERIOR

BRUCE BABBITT, Secretary

U.S. GEOLOGICAL SURVEY

Gordon P. Eaton, Director

The use of trade, product, industry, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.

For additional information write to: Copies of this report can be purchased from:

District Chief U.S. Geological Survey U.S. Geological Survey Earth Science Information Center Box 25046, MS 415 Open-File Reports Section Denver Federal Center Box 25286, MS 517 Denver, CO 80225 Denver Federal Center

Denver, CO 80225

CONTENTS

Abstract..........................................................................................................................................................^ 1Introduction..........................................................^ 2

Purpose and scope....................................................................................................................................................... 2Description of the study area ...................................................................................................................................... 2Previous investigations............................................................................................................................................... 4

Methods of data collection and analysis ............................................................................................................................... 4Lake-sediment grab sampling..................................................................................................................................... 5Lake-bottom-sediment core sampling......................................................................................................................... 5Lake-water sampling................................................................................................................................................... 9Quality-assurance procedures and analytical methods ............................................................................................... 10Statistical data-analysis techniques............................................................................................................................. 11

Statistical analyses of radionuclide concentrations............................................................................................................... 12Lake-sediment grab samples....................................................................................................................................... 12

1992 data........................................................................................................................................................... 12Comparison between 1983-84 and 1992 data .................................................................................................. 12

Lake-bottom-sediment core samples .......................................................................................................................... 181992 data...............................................................................................................^^ 18Comparison between 1983-84 and 1992 data .................................................................................................. 25

Lake-water samples..................................................................................................................................................... 25Summary............................................................................................................................................................................... 34References cited.................................................................................................................................................................... 35Appendixes............................................................................................................................................................................ 37

Appendix A Lake-sediment grab samples................................................................................................................. 39Appendix B Lake-bottom-sediment core samples .................................................................................................... 43Appendix C Lake-water samples .............................................................................................................................. 55

FIGURES

1-4. Maps showing location of:1. Standley Lake, Great Western Reservoir, Mower Reservoir, and surrounding area .................................. 32. Sampling sites in Standley Lake................................................................................................................. 63. Sampling sites in Great Western Reservoir................................................................................................ 74. Sampling sites in Mower Reservoir............................................................................................................ 8

5. Map showing concentrations of ' Pu in lake-sediment grab samples collected from Standley Lake,Great Western Reservoir, and Mower Reservoir................................................................................................... 13

6. Boxplots showing distribution of 239'240pu concentrations in lake-sediment grab samples collectedfrom Standley Lake, Great Western Reservoir, and Mower Reservoir................................................................ 14

7. Map showing concentrations of Am in lake-sediment grab samples collected from Standley Lake,Great Western Reservoir, and Mower Reservoir................................................................................................... 15

8. Boxplots showing distribution of Am concentrations in lake-sediment grab samplescollected from Standley Lake, Great Western Reservoir, and Mower Reservoir.................................................. 16

9A-B. Boxplots showing:9A. Distribution of 239'240pu concentrations in 1983-84 and 1992 and differences

between matched pairs of lake-sediment grab samples at Standley Lake.................................................. 169B. Distribution of 239'240pu concentrations in 1983-84 and 1992 and differences

between matched pairs of lake-sediment grab samples at Great Western Reservoir.................................. 17

CONTENTS

10-13. Graphs showing:10. Relation between 239> 240pu concentrations in lake-sediment grab samples collected at

co-located sites in 1983-84 and in 1992 at Standley Lake ................................................................................... 1711. Relation between 239 - 240 pu concentrations in lake-sediment grab samples collected at

co-located sites in 1983 84 and in 1992 at Great Western Reservoir................................................................... 1812. Concentrations of 239' 240pu and 241 Am in lake-bottom-sediment core SED08392

collected from Standley Lake................................................................................................................................ 2313. Ratio of concentrations of 241 Am to 239 '240pu in lake-bottom-sediment core SED083 92

collected from Standley Lake................................................................................................................................ 2414A-14B. Scatterplots showing:

14A. Relation between 241 Am to 239 »240pu concentration ratio and 239'240pu concentration inlake-bottom-sediment core samples collected from Standley Lake and Great Western Reservoir......... 26

14B. Relation between concentrations of 239>240Pu and 241 Am in lake-bottom-sedimentcore samples collected from Standley Lake and Great Western Reservoir............................................. 26

15A-15D. Graphs showing relation of concentrations of 239>240 Pu to depth at lake-bottom-sediment site:15A. SED08192 collected from Standley Lake in 1983-84 and 1992............................................................. 2715B. SED08392 collected from Standley Lake in 1983-84 and 1992 ............................................................. 2815C. SED09192 collected from Great Western Reservoir in 1983-84 and 1992............................................. 2915D. SED08592 collected from Great Western Reservoir in 1983-84 and 1992............................................. 30

16A. Boxplot showing distribution of concentrations of 239'240pu in lake-bottom-sediment core samples collectedfrom Standley Lake and Great Western Reservoir............................................................................................... 31

16B. Scatterplot showing relation between 239'240pu concentrations in lake-bottom-sediment core samplescollected from Standley Lake and Great Western Reservoir in 1983 84 and 1992.............................................. 31

17. Map showing gross alpha concentrations in water samples collected in 1992 from Standley Lake,Great Western Reservoir, and Mower Reservoir................................................................................................... 33

18. Boxplot showing distribution of gross alpha concentrations in water samples collectedin 1992 at Standley Lake, Great Western Reservoir, and Mower Reservoir......................................................... 34

TABLES

1. Summary statistics for radionuclide concentrations in duplicate samples................................................................ 102. Summary statistics for radionuclide concentrations in equipment rinsates.............................................................. 113. Summary statistics for radionuclide concentrations in lake-sediment grab samples................................................ 144. Radionuclide concentrations in lake-bottom-sediment core samples....................................................................... 195. Summary statistics for radionuclide concentrations in lake-water samples ............................................................. 32

Appendix A Lake-sediment grab samples Al. Radionuclide concentrations in lake-sediment grab samples ................................................................................... 40A2. Chemical concentrations in lake-sediment grab samples ......................................................................................... 41

Appendix B Lake-bottom-sediment core samples Bl. Lake-bottom-sediment core descriptions.................................................................................................................. 44B2. Chemical concentrations in lake-bottom-sediment core samples............................................................................. 47

Appendix C Surface-water samples Cl. Field measurements at lake-water-sampling sites..................................................................................................... 56C2. Radionuclide concentrations in lake-water samples................................................................................................. 60C3. Chemical concentrations in lake-water samples....................................................................................................... 63

IV CONTENTS

CONVERSION FACTORS AND ABBREVIATIONS

Multiply

acreacre-foot (acre-ft)

centimeter (cm)foot (ft)

inch (in.)liter (L)

micrometer (fim)milliliter (mL)

mile (mi)square mile (mi2)

By

0.0040471,233.49

0.39370.3048

25.40.26420.000039370.033811.6092.590

To obtain

square kilometercubic meterinchmetermillimetergallon (US)inchouncekilometersquare kilometer

Degree Celsius (°C) may be converted to degree Fahrenheit (°F) by using the following equation:°F = 9/5 (°C) + 32.

The following terms and abbreviations also are used in the report:

microgram per liter (ng/L)

microsiemens per centimeter at 25 degrees Celsius OS/cm)

milligram per kilogram (mg/kg)

milligram per liter (mg/L)

nanocurie per square meter (nCi/m2)

picocurie per gram (pCi/g)

picocurie per liter (pCi/L)

year(yr)

Sea level: In this report "sea level" refers to the National Geodetic Vertical Datum of 1929 (NGVD of 1929)--a geodetic datum derived from a general adjustment of the first-order level nets of both the United States and Canada, formerly called Sea Level Datum of 1929.

CONTENTS

Characterization of Selected Radionuclides in Sediment and Surface Water in Standley Lake, Great Western Reservoir, and Mower Reservoir, Jefferson County, Colorado, 1992

By David W. Clow and David A. Johncox

Abstract

Sediment and surface water from Standley Lake, Great Western Reservoir, and Mower Reser voir, near Denver, Colorado, were sampled and analyzed for selected radionuclides during August through October 1992. These reservoirs are located about 1.5 to 3.3 miles east of the U.S. Department of Energy's Rocky Flats Envi ronmental Technology Site, formerly the Rocky Flats Plant, which was a manufacturing site for nuclear bomb triggers. In the 1960's, drums con taining oil contaminated with plutonium leaked onto the ground. Some of these contaminated soils were subsequently dispersed ofTsite by wind. In 1983 84, plant operators sampled reservoir sedi ment from Standley Lake and Great Western Reservoir and determined that some sediment was contaminated with plutonium-239,240(239'240Pu). However, the data from the 1983 84 study lacked the quality-assurance crite ria currently (1992) required by the Rocky Flats Field Office. In 1992, the U.S. Geological Survey, in cooperation with the U.S. Department of Energy, undertook a study to: (1) Characterize concentrations of selected radionuclides in lake sediment and surface water at Standley Lake, Great Western Reservoir, and Mower Reservoir;and (2) compare 239'240pu lake-sediment data obtained in 1983-84 to results from co-located lake-sediment samples obtained in 1992 by the U.S. Geological Survey.

Median 239>240pu concentrations in lake- sediment grab samples from Standley Lake, Great Western Reservoir, and Mower Reservoir were

0.037, 0.105, and 0.351 picocuries per gram (pCi/g), and the differences between the reservoirs were statistically significant at p<0.05. The high est 239'240pu concentrations were measured in lake-sediment grab samples collected from reser voirs closest to Rocky Flats Environmental Tech nology Site, which is consistent with the spatial pattern of 239>240pu concentrations identified in soil surrounding the site in previous studies.

The maximum concentration of 239>240pu dissolved in lake water was 0.009 picocuries per liter, well below limits suggested by the Colorado Department of Public Health and Environment. Dissolved gross alpha and uranium isotope concentrations were below National Drinking Water Standards in all water samples.

There was no statistically significant differ ence between 239>240pu concentrations in lake- sediment grab samples collected from Standley Lake in 1983-84 and in 1992; however, there was a small, but statistically significant difference at Great Western Reservoir (p<0.05). Mean239'240Pu concentrations at Great Western Reser voir were 0.140 pCi/g lower in 1992, and median concentrations were 0.040 pCi/g lower. One pos sible explanation for the difference in concentra tions in lake-bottom-sediment grab samples is thatnew sediments with relatively low 239'240pu con centrations may have buried older sediments con taining higher concentrations of 239'240Pu; the grab-sampling technique collects only the top 2 to 4 inches of sediment from the lake bottom.

In lake-bottom-sediment cores, trends in 239'240Pu concentrations with depth in 1992 were

Abstract

similar to trends identified in the 1983-84 study. Maximum 239'240pu concentrations occurred at depths ranging from 13 to 31 inches below the sediment-water interface at most sites. There was a small, but statistically significant (p<0.05) dif ference in 239'240pu concentrations in co-located lake-bottom-sediment cores collected in 1983-84 and in 1992. Measured concentrations tended to be higher in 1983-84 than in 1992. The median difference between data sets was 0.050 pCi/g, and differences tended to increase with concentration; in samples with concentrations above 1.5 pCi/L, concentrations were 10 to 30 percent higher in 1983 84 than in 1992. The differences in concen trations could be attributable to spatial variations in sediment and 239'240pu deposition.

INTRODUCTION

Standiey Lake, Great Western Reservoir, and Mower Reservoir are man-made water bodies used for domestic water supply and irrigation in northeastern Jefferson County, Colorado (fig. 1). These reservoirs (hereinafter referred to as lakes) are located 1.5 to 3.3 mi east of the Rocky Flats Environmental Technol ogy Site (RFETS, formerly known as the Rocky Flats Plant), which is about 16 mi northwest of Denver, Colorado. The RFETS, which is owned by the U.S. Department of Energy (DOE) and operated by contractors, was built in 1951 and has been used for plutonium processing, purification, and machining in the manufacture of triggers for nuclear bombs. In the 1960's, drums containing oil contaminated with pluto nium leaked onto the ground at the 903 pad (fig. 1), and contaminated soil was subsequently transported offsite by wind erosion (Krey and Hardy, 1970). Investiga tions in the 1970's, 80's, and 90's indicated that soil near the RFETS was contaminated with plutonium-239,240 (239 '240Pu, which is plutonium-239 + plutonium-240) and americium-241 (241 Am), which is adaughter product of p 1-utonium-241(241 Pu) (Krey and Hardy, 1970; Hardy and others, 1980; Thomas and Robertson, 1981; Setlock, 1983; Setlock and Paricio, 1984; Litoar and others, 1994). In 1983-84, the RFETS contractor measured elevated levels of239'240Pu in bottom sediment from Standiey Lake and Great Western Reservoir (Setlock, 1983; Setlock and Paricio, 1984). However, the data were not collected using the quality-assurance criteria currently required by the DOE-RFETS. Between August 27 and

Oct. 14, 1992, the U.S. Geological Survey (USGS), in cooperation with the DOE, collected lake-sediment grab samples, lake-bottom sediment cores, and water samples from Standiey Lake, Great Western Reservoir, and Mower Reservoir.

Purpose and Scope

This report summarizes concentrations of selected radionuclides in sediment and water samples collected in 1992 from Standiey Lake, Great Western Reservoir, and Mower Reservoir. The report also describes the results of comparisons between 239'240pu concentrations in sediment collected from Standiey Lake and Great Western Reservoir in 1983 84 and 1992. Analytical results forradionuclide, trace ele ment, major-element composition, and other selected water-quality constituents in individual sediment and water samples are presented in the appendixes at the back of this report.

Description of the Study Area

Standiey Lake is a reservoir in the city of Westminster, a suburb of Denver, in northeastern Jef ferson County and is about 3.3 mi southeast of the RFETS (fig. 1). This lake is formed by an earthen dam on Big Dry Creek and originally was constructed in about 1910 to supply water for irrigation. Standiey Lake supplies drinking water for the cities of Westmin ster, Thornton, and Northglenn, which are located 4 mi southeast, 8 mi east, and 7 mi northeast of Standiey Lake. About two-thirds of the lake water is municipal water supply, and the other one-third is for irrigation. The full capacity of the lake is about 43,000 acre-ft; the mean depth is about 36 ft, and the maximum depth is 96 ft based on the original land surface (Ruddy and others, 1992). Almost all the inflow to Standiey Lake is delivered by canals flowing from the southeast which do not pass through the RFETS. Woman Creek, which drains the southern side of the RFETS, flows intermit tently into Standiey Lake. Standiey Lake is owned and operated by the Farmers Reservoir and Irrigation Com pany of Brighton.

Great Western Reservoir is in northeastern Jef ferson County about 1.5 mi east of the RFETS (fig. 1). Great Western Reservoir has an earthen dam that was built in 1904 and originally was designed to supply water for irrigation. The lake is owned and operated by the city of Broomfield, which is located 2 mi to the northeast of Great Western Reservoir and supplies drinking water to the city. The full capacity of the lake

2 Characterization of Selected Radionuclides in Sediment and Surface Water in Standiey Lake, Great Western Reservoir, and Mower Reservoir, Jefferson County, Colorado, 1992

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Mower Reservoir is a small, privately owned lake about 1.5 mi southeast of the RFETS (fig. 1). Mower Reservoir water is used solely for agriculture. The lake covers an area of about 9 acres (U.S. Depart ment of Energy, 1992). Inflow into Mower Reservoir is delivered from Mower Ditch, which diverts water from Woman Creek. Outflow discharges into Standley Lake southeast of Mower Reservoir. The lake had a maximum depth of about 5 ft during the sampling period. A dense mat of aquatic weeds covers most of the lake throughout the growing season.

Previous Investigations

239Pu, 240Pu, and 241 Pu are by-products of the nuclear processing activities that occurred at theRFETS. The half-life of 239Pu is 24,100 years, the half-life of 240Pu is 6,560 years, and the half-life of 241 Pu is 14.4 years (Walker and others, 1989). 241Am is a decay product of 241 Pu and has a half-life of432.7 years. 239Pu, 240Pu, and 241 Am primarily are alpha emitters and are the most prevalent transuranic contaminants in the soil at the RFETS (Litoar and oth ers, 1994). A summary of the results of previous soil and lake-sediment investigations in the vicinity of the RFETS is provided in the following paragraphs.

A study conducted in 1970 characterized 239,240pu concentrations in soil surrounding the RFETS, and a contamination pattern converging on the drum storage site was identified (Krey and Hardy,1970). Concentrations of 239'240Pu in soil at the stor age site were more than 2,000 nCi/m2 and decreased in all directions away from the storage site (Krey and Hardy, 1970). These findings were confirmed by Litoar and others (1994), who measured 239'240pu and241 Am concentrations as much as 4,440 pCi/g in soil near the drum storage site. It also was determined that90 percent of 239'240Pu and 241 Am concentrations were in the top 12 cm of soil, but earthworm burrowing probably was responsible for transporting some of the actinides to depths of 40 cm (Litoar and others, 1994).

In 1970 and 1973, the U.S. Environmental Pro tection Agency collected lake-bottom-sediment grab samples to determine 239-240pu levels in the sediment in Standley Lake. The concentrations were predomi nantly at background levels attributable to geologic and atmospheric testing sources of less than or equal to 0.10 pCi/g (U.S. Environmental Protection Agency, 1973, 1975). Maximum 239-240Pu levels were 0.37pCi/ginthe 1970 study and 0.17 pCi/g in the 1973 study.

Lake-bottom-sediment cores were collected in 1974 in Standley Lake and Great Western Reservoir by a DOE contractor, Battelle Laboratory. One core from Standley Lake had a maximum 239>240pu concentration of 0.39 pCi/g, and a core from Great Western Reservoir had a maximum of 6.09 pCi/g (Thomas and Robertson, 1981).

In 1976, a lake-bottom-sediment core sample was collected from Standley Lake to determine the tim ing of plutonium releases (Hardy and others, 1980). Using a combination of actinides, the history of depo sition of selected radionuclides was established, including fallout from nuclear bomb testing, nuclear- powered satellite failures, and releases at the RFETS. About 70 percent of the 239 > 240pu occurred in the uppermost 30 cm of the lake-bottom-sediment core, which Hardy and others (1980) attributed to drum leak age from the RFETS. The remaining 30 percent of the 239,240pu wa§ attributed to atmospheric fallout during extensive nuclear testing in the 1950's and early 1960's (Hardy and others, 1980).

Additional studies were conducted in 1983 and 1984 by the DOE contractor, Rockwell International, to improve the existing knowledge of environmental radionuclide concentrations and relevant transport phe nomena in Standley Lake and Great Western Reservoir (Setlock, 1983; Setlock and Paricio, 1984). In each of these studies, lake-sediment grab samples and lake- bottom-sediment cores were collected. Maximum 239,240pu concentrations in lake-bottom-sediment cores from Standley Lake were 0.61 pCi/g. Maximum 239,240pu concentrations in core samples from Great Western Reservoir were between 4.9 and 5.4 pCi/g. The 1983 and 1984 studies are the focus of the histori cal data comparison contained in this report.

METHODS OF DATA COLLECTION AND ANALYSIS

Sample-collection methods were designed to determine physical and chemical characteristics of sed iment and water in the three lakes. Methods used for sample collection followed the RFETS environmental


management standard operating procedures (EG&G, Rocky Flats, Inc., 1991) and are described or refer enced in the following sections. The USGS boat was decontaminated at the RFETS decontamination pad according to standard procedures. Decontamination of the boat was done before and after the sampling of each lake. The samples were relinquished on the chain-of- custody to the DOE subcontractor for handling and shipping to the contract laboratories. The DOE subcontractor provided the sample bottles, which met the quality-assurance/quality-control requirements (U.S. Department of Energy, 1994), the sample bottle labels, and the chain-of-custody sheets. Sampling and decontamination methods specific to each type of sampling are described in the following sections.

Lake-Sediment Grab Sampling

Lake-sediment grab samples were collected from predetermined locations in the lakes. Sampling locations correspond to sites sampled during the 1983-84 studies at the RFETS. Sixteen lake-sediment grab samples were collected from Standley Lake on Sept. 3 4, 1992 (fig. 2), 15 samples were collected at Great Western Reservoir on Aug. 27 28 and Sept. 2, 1992 (fig. 3), and 3 samples were collected from Mower Reservoir on Sept 10, 1992 (fig. 4). The lake-sediment grab samples were analyzed for selected radionuclides (table A-l in Appendix A at the back of this report), trace elements, major ions, and cyanide (table A-2 in Appendix A). Analyses for total organic carbon were done for 10 percent of all grab samples at selected sampling sites.

Lake-sediment grab samples were collected using an Eckman dredge. The required volume of sediment sampled at most of the sites was 750 mL. Analyses for total organic carbon required an addi tional 1,250 mL of sediment for a total of about 2 L. The volume of sediment collected by the dredge was dependent on the physical consistency of the sediment. Where the sediment was soft, about 2 L was collected. Sandy or gravelly bottoms yielded only about 0.16 to 0.66 L of sediment, and several grabs had to be made at these sites to achieve the 750 mL. Once the dredge was retrieved, the sediment was emptied into a clean stainless-steel bowl and homogenized using a clean stainless-steel spoon. The sample then was container ized using the stainless-steel spoon to place the sedi ment in the sample bottle. Between samples, the decontamination of the dredge and the stainless-steel bowl and spoon consisted of a detergent wash, a deionized water rinse with a pressurized sprayer, and a drying with paper towels.

Lake-Bottom-Sediment Core Sampling

Lake-bottom-sediment core samples were col lected from Standley Lake, Great Western Reservoir, and Mower Reservoir. Coring locations at Standley Lake and Great Western Reservoir in 1992 correspond to sites sampled during the 1983 84 studies. Lake- bottom-sediment core samples had not been previously collected at Mower Reservoir, and the coring locations there were determined by the USGS. A core was collected near the dam structure of each lake, near the center of each lake somewhere near the original stream channel, and in the deltas where the main tributaries flow into each lake. Two separate lake-bottom- sediment cores were collected at each sampling site: one core for chemical analyses, and the second for physical description.

Lake-bottom-sediment cores from the lakes were collected using a gravity-driven piston coring device (EG&G Rocky Flats Inc., 1991). The coring equip ment consisted of a galvanized-steel weight stand that had fins, an attached galvanized-steel core barrel, driv ing weights, galvanized couplings, polyvinyl chloride (PVC) finger assembly, hose clamps, 2.6-in-diameter polybutyrate core liners, and a PVC piston valve. Once fully assembled, the coring device was attached to a steel cable and lowered into the water using a USGS E-reel (Buchanan and Somers, 1980). The coring device was lowered to about 20 ft from the lake bottom. At this point, the coring device was allowed to free-fall to the lake bottom to obtain a maximum core length. At the shallow sampling sites at Mower Reservoir, the cor ing device was allowed to free-fall from the water sur face to get enough momentum to obtain an adequate core sample. The core sample was raised to the water surface using the E-reel. The core liner was removed from the core barrel, and end caps were secured on both ends of the liner. The liner was labeled and stored ver tically in a cooled core-liner storage box.

The two core samples from each site were taken to a shore station for extrusion, description, and con tainerizing. Lake water above the sediment was siphoned from the core liner with a peristaltic pump, and an extrusion rod was placed in the bottom of the core liner. A clean 2-in.-long cutting sleeve was placed on top of the core liner, and a 2-in. section of core was pushed up into the cutting sleeve. A polyethylene cutter was inserted between the top of the core liner and the bottom of the cutting sleeve, and a 2-in. sample was cut from the core. The sample was put into a sample bottle and homogenized using a clean plastic spatula. A subsample was collected from this bottle and placed into a second sample bottle. One sample bottle was for analysis of radionuclides, and the other sample bottle

METHODS OF DATA COLLECTION AND ANALYSIS 5

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Sediment Grab Sample

Sediment Core and Water-Quality Sample

V Water-Quality Sample

SED12892 Lake-sediment grab andlake-bottom-sediment core sample number

SW02492 Lake-water sample number

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Figure 3. Location of sampling sites in Great Western Reservoir.

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METHODS OF DATA COLLECTION AND ANALYSIS

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V SED09092 SED15892 SW02092

SED08992 SED16092 SW01992

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Grab, Sediment Core, and Water-Quality Samples

SED08992 Lake-sediment grab andlake-bottom-sediment core sample number

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Figure 4. Location of sampling sites in Mower Reservoir.


was for analysis of trace elements, selected major ions, and cyanide. This procedure was repeated for the entire length of each core.

A physical description of the core material was done on one of the two cores collected from each lake- bottom sampling site (table B-1 in Appendix B). The core was extruded horizontally onto a table covered with white paper. The core was split in half longitudi nally, using a spatula, to reveal the middle of the core. A yardstick was aligned along the side of the core for measuring purposes. The core material was photo graphed and qualitatively described in terms of color, texture, and other features. Core color was determined using the Munsell soil color chart standards.

Lake-bottom-sediment cores for chemical analy ses were obtained from four sites at Standley Lake (fig. 2) on Sept. 8 9. Core lengths ranged from 8 in. at the Woman Creek bay site (SED08292) to 36 in. at the sampling site (SED08192) near the dam. Lake- bottom-sediment core samples were collected from five sites at Great Western Reservoir during 1992 (fig. 3) from Aug. 31-Sept. 2, and Sept. 15. Core lengths ranged from 9 in. at the Walnut Creek bay site (SED09292) to 31 in. at the site (SED09192) near the dam. Lake-bottom-sediment cores were obtained from three sites at Mower Reservoir (fig. 4) on Sept. 14. The cores ranged in length from 11 in. at the inlet of Mower Ditch site (SED09092) to 22 in. near the damsite (SED08992). The chemical analyses of the lake- bottom-sediment cores included radionuclides, selected major ions, trace elements, and cyanide. Attempts were made to obtain single core lengths of as much as 45 in.; however, some attempts were not successful. The low core recoveries could have been because of the physical characteristics of the sediment and limitations of the coring equipment.

Lake-Water Sampling

Water samples from the lakes were collected by using a horizontally suspended Van Dorn discrete-zone sampler. The Van Dorn sampler consists of a PVC cylinder with rigid polyurethane end seals, silicone gaskets, and a latex closing tube. The sampler is about 2 ft long and has a capacity of about 4 L. Samples obtained during the lake-bottom coring were collected about 1 to 1-1/2 ft from the bottom of the lake. During the Oct. aquatic sampling, water samples were collected at various depths based on the total depth at each sampling point. The water was decanted from the Van Dorn sampler into a clean 20-L carboy.

The water samples were taken to a shore station for preparation, containerizing, and preservation. All aliquots were taken from the 20-L carboy used to

composite the samples on the boat. Samples for total concentrations were poured directly from the 20-L carboy, which was gently inverted several times to resuspend particulates, into the sample bottles. Sam ples for dissolved concentrations were pumped from the 20-L carboy through a 0.45-|am cellulose- membrane filter. The filter cartridge was flushed with1 L of deionized water and about 500 mL of native water prior to filtration of samples from each site. The samples were relinquished on the chain-of-custody to the DOE subcontractor for handling and shipping to the laboratories. The DOE subcontractor provided the sample bottles, the sample bottle labeling, the 0.45-(am filter cartridges, and the chain-of-custody forms.

Water samples were collected in conjunction with the lake-bottom-sediment coring in Aug. and Sept. 1992 done by the USGS, and with the Oct. 1992 aquatic sampling done by the DOE subcontractor. Water samples were collected in July 1992 by the DOE subcontractor.

Field measurements were made at each water- sampling site at all three lakes (table C-l in appendix C at the back of this report) using a multi-parameter mea suring instrument. The parameters measured with the multi-parameter measuring instrument included water temperature, dissolved oxygen (DO), pH, and specific conductance. These field parameters were measured prior to the collection of water samples to develop a lake profile. By observing the water temperature and the DO, a determination of lake stratification could be made. No lake stratification was detected during the Oct. water sampling, so samples were composited from surface, middle, and bottom depths.

Four lake-bottom water samples were collected from Standley Lake during 1992 on Sept. 8-9 (fig. 2), five were collected from Great Western Reservoir from Aug. 31 Sept. 2 and on Sept. 15 (fig. 3), and three were collected from Mower Reservoir on Sept. 14 (fig. 4). The analyses of these water samples included radionu clides (table C-2 in Appendix C), trace elements, major ions, herbicides, nutrients, cyanide, and sulfide (table C-3 in Appendix C).

Water sampling, coinciding with the aquatic sampling performed by the DOE subcontractor at all three reservoirs, was done in Oct. 1992. Five water- quality samples were collected from Standley Lake on Oct. 13 14 (fig. 2), four were collected at Great West ern Reservoir on Oct. 2 (fig. 3), and five were collected from Mower Reservoir on Oct. 8 (fig. 4). The analyses of these water samples included radionuclides (table C-2 in Appendix C), trace elements, major ions, nutrients, dissolved and suspended solids, oil and grease, pesti cides, and volatile organic compounds (table C-3 in Appendix C).


Quality-Assurance Procedures and Analytical Methods

Quality-assurance procedures associated with sampling, sample preparation, and sample shipping were overseen by the DOE subcontractor. The quality- assurance activities were accomplished according to quality requirements (EG&G Rocky Flats Inc., 1991).

The types of quality-assurance samples collected at the sediment- and water-sampling sites consisted of duplicate samples and equipment rinsates. Duplicate samples were collected to provide an indication of overall sampling precision (U.S. Department of Energy, 1990). These duplicate samples were collected immediately after the regular samples were collected

using the same sampling techniques. Equipment- rinsate samples were collected as a check on the poten tial for sample contamination by the sampling equip ment. The equipment-rinsate samples were collected by containerizing deionized water that was used to rinse the various decontaminated sampling equipment. The frequency of the duplicate sample collection was 1 in every 10 regular sediment and water samples col lected. Summary statistics for radionuclide concentra tions in duplicate samples and differences in measured concentrations are in table 1. The frequency of the equipment-rinsate sample collection was 1 in every 20 regular sediment and water samples collected, and summary statistics for radionuclide concentrations in equipment rinsates are presented in table 2. Quality assurance for the field measurements consisted of

Table 1. Summary statistics for radionuclide concentrations in duplicate samples

[n, number of samples]

Total radionuclides (picocuries per gram)

Mean difference in concentrations

Mean concentration

n

Americium- 241

0.028

.049

5

Gross alpha

2.9

22.5

6

Gross beta

2.3

25.6

6

Plutonium- 239,240

0.050

.129

6

Uranium- 233,234

0.066

1.310

6

Uranium- 235

0.044

.059

6

Uranium- 238

0.211

1.289

6



Mean concentration

n

Americium- 241

.014

.117

4

Plutonium- 239,240

.153

.783

7

Polonium- 210

.160

1.797

6

Uranium- 233,234

.166

1.458

7

Uranium- 235

.038

0.068

7

Uranium- 238

.144

1.462

7

Dissolved radionuclides (picocuries per liter)


Mean concentration

n

Americium- 241

.002

.003

3

Gross alpha

.6

.5

3

Gross beta

.3

1.4

3

Plutonium- 239,240

.001

.001

3

Uranium- 233,234

.185

.541

3

Uranium- 235

.059

.034

3

Uranium- 238

.129

.334

3

Total radionuclides (picocuries per liter)

Mean difference in concentration

Mean concentration

n

Americium- 241

.007

.006

5

Gross alpha

1.9

1.7

5

Gross beta

.9

2.0

5

Plutonium- 239,240

.002

.003

5

Uranium- 233,234

.137

.503

5

Uranium- 235

.042

.018

5

Uranium- 238

.238

.457

4

10 Characterization of Selected Radionuclides in Sediment and Surface Water in Standley Lake, Great Western Reservoir, and Mower Reservoir, Jefferson County, Colorado, 1992

Table 2. Summary statistics for radionuclide concentrations in equipment rinsates

[n. number of samples]


Mean

Standard deviation

n

Americium-241

0.001

.001

8

Grossalpha

-0.167

.384

7

Grossbeta

0.185

.654

7

Plutonium-239,240

0.001

.002

8

Uranium-233,234

0.060

.075

8

Uranium-235

-0.003

.014

8

Uranium-238

0.065

.088

8

Dissolved radionuclides (picocuries per liter)

Mean

Standard deviation

n

Americium- 241

.005

.005

4

Gross alpha

.305

.204

4

Gross beta

-.440

.629

4

Plutonium- 239,240

.002

.002

4

Uranium- 233,234

.196

.181

4

Uranium- 235

.003

.018

4

Uranium- 238

.200

.172

4

Total radionuclides (picocuries per liter)

Mean

Standard deviation

n

Americium- 241

.671

1.631

6

Gross alpha

.877

1.531

6

Gross beta

.447

1.804

6

Plutonium- 239,240

.668

1.632

6

Uranium- 233,234

.814

1.562

6

Uranium- 235

.669

1.632

6

Uranium- 238

.832

1.554

6

equipment inspection and calibration for each field- parameter measurement according to requirements (EG&G Rocky Flats, Inc., 1991).

Analytical methods for sediment and water- quality tests were provided by the U.S. Department of Energy (1990). Quality-assurance procedures for sample analyses and analytical data validation are out lined by the U.S. Department of Energy (1994). All analyses in this report met data-validation criteria.

Statistical Data-Analysis Techniques

To test for differences in analyte levels between the lakes, samples from each lake were grouped, and a Kruskal-Wallis test was applied to determine whether sample distributions were the same, or in some cases, whether medians of sample groups were the same. This test was used to identify differences in lake- sediment grab data and lake-water-quality results between lakes based on the 1992 data.

In the comparison of results for 239-240pu jn lake- sediment grab samples and lake-bottom-sediment core samples collected in 1983 84 and in 1992, grab

samples and core samples were evaluated indepen dently. Results where concentrations were less than the reported detection limit were included in all statistical tests, and all data included in this report are uncensored. Uncensored data were used because removal or substitution of data below the detection limit can intro duce bias into statistical analyses (Gilliom and others, 1984; Porter and others, 1988). Nonparametric statis tical techniques were used because most data sets were not distributed normally.

Matched pairs of data were identified as samples that were collected in the same location in the 1983 84 and 1992 studies. Results for groups of matched pairs were compared using either a sign test or a Wilcoxon signed-rank test, depending on whether the differences between the data sets were symmetrically distributed. Although the signed-rank test provides more power when differences are symmetrical, the test is inappro priate where differences are asymmetric (Helsel and Hirsh, 1992; Ott, 1993). For matched pairs, the sign test determines whether x is generally larger or smaller than y, whereas the signed-rank test determines whether the median difference between paired obser vations is equal to zero (Helsel and Hirsh, 1992).


STATISTICAL ANALYSES OF RADIONUCLIDE CONCENTRATIONS

median values of samples from Mower Reservoir and Standley Lake was significant at p<0.05.

Lake-Sediment Grab Samples

1992 Data

Maximum concentrations of 239'240Pu and241 Am in sediment grab samples from all three study lakes were greater than the range of background con centrations, roughly <0.1 pCi/g, expected from natural processes and fallout (U.S. Environmental ProtectionAgency, 1973, 1975). The concentration of 239 '240Pu in lake-sediment grab samples for the three study lakesis shown in figure 5. Concentrations of 239'240Pu were highest in Mower Reservoir sediment and lowest insediment in Standley Lake. Boxplots of 239 '240Pu con centration are shown in figure 6. Summary statistics for radionuclide concentrations in all lake-sediment grab samples and groups of grab samples separated according to lake are listed in table 3. Median 239,240pu concentrations in Standley Lake, Great West ern Reservoir, and Mower Reservoir were 0.037, 0.105, and 0.351 pCi/g, respectively, and the differ ences between the reservoirs were statistically signifi cant at p<0.05.

The 239'240pu concentrations in Mower Reser voir were considerably higher than background levels measured in lake sediment in the Front Range of Colorado. For comparison, in a previous study (Cohenand others, 1990), mean 239 > 240pu concentrations in the top 4 in. of sediment from two unaffected Front Range lakes, Wellington Lake and Halligan Reservoir, were 0.094 and 0.027 pCi/g. Trends among the lakes used in this study were in agreement with the patterns of 239,240pu concentration reported for soil surrounding Rocky Flats (Hardy and others, 1980) and indicated that sediment in Mower Reservoir has the highest con centrations of 239'240Pu of the three study lakes. These findings are consistent with the fact that Mower Reser voir is closest to the drum storage site at Rocky Flats.

The mean concentration of 241 Am in lake- sediment grab samples was highest in Great Western Reservoir and lowest in Standley Lake (fig. 7, table 3).However, 241Am concentrations in sediment from Great Western Reservoir varied considerably and were substantially skewed; the median value was higher in Mower Reservoir than in Great Western Reservoir and Standley Lake (fig. 8, table 3). The difference in the

Comparison Between 1983-84 and 1992 Data

When all lake-sediment grab sample data col lected in 1983 84 were considered as one group, and all analogous data from 1992 were considered as another group, there was no statistically significant dif ference in the distributions of the data sets (p>0.05). However, when lake-sediment grab data from Standley Lake and Great Western Reservoir were considered separately, there was a statistically significant differ* ence at Great Western Reservoir (p<0.05) and not at Standley Lake (no samples were taken from Mower Reservoir in 1983 84). Boxplots showing means, medians, and quartiles for the 1983 84 and 1992 data, as well as differences between the two data sets for co- located samples, are shown in figure 9. At Standley Lake, there seemed to be no consistent difference between the 1983-84 and the 1992 data (fig. 9a), but at Great Western Reservoir, the 1983 84 data had more spread than the 1992 data, and 239-240pu concentrations tended to be higher in 1983-84 (fig. 9b). The median difference between data sets at Great Western Reser voir was 0.040 pCi/g, and the mean difference was 0.140 pCi/g. The mean difference was substantially greater than the median difference because the distribu tion of differences was skewed; differences were greater at high concentration than at low concentration.Scatterplots of the matched pairs of 239'240Pu concen tration data for Standley Lake and Great Western Reservoir are shown in figures 10 and 11. A 1:1 line also is shown to indicate where samples would tend to plot if concentrations in co-located samples were the same in 1983 84 and 1992. Sites where samples had 239,240pu concentrations below 0.2 pCi/g in 1983-84 tended to have similar concentrations in 1992. How ever, sites where samples had 239'240pu concentrations above 0.2 pCi/g in 1983 84 tended to have much lowerconcentrations in 1992. The lower 239'240Pu concen trations in 1992 compared to 1983-84 could be explained by recent deposition of sediments with rela tively low 239'240pu concentrations; the new sediments may have buried the older sediments having somewhathigher concentrations of 239 '240Pu. It is likely that thesediments with 239 '240pu concentrations between 0.2 and 1.0 pCi/g still exist but were not sampled because the grab-sampling technique collects only the upper most 2 to 4 in. of sediment.


105° 07 1 35"

39° 53 1 55"

Great Western Reservoir

Mower Reservoir

Standley Lake

Plutonium239,240 in iakc. sediment grab samples Size of symbol is proportional to concentration

0.1 pCi/g

0.2 pCi/g

0.4 pCi/g

0.5

1/2 1 MILE

I1 KILOMETER

Figure 5. Concentrations of 239'240pu jn lake-sediment grab samples collected from Standley Lake, Great Western Reservoir, and Mower Reservoir.

STATISTICAL ANALYSES OF RADIONUCLIDE CONCENTRATIONS 13

CJ D.

0.5

0.4

0.3

0.2

0.1

EXPLANATION

3rd QUARTILE

MEDIAN

MEAN

1st QUARTILE

Standley Lake


Mower Reservoir

Figure 6. Distribution of 239 '240pu concentrations in lake-sediment grab samples collected from Standley Lake, Great Western Reservoir, and Mower Reservoir.

Table 3. Summary statistics for radionuclide concentrations in lake-sediment grab samples

[Measurements in picocuries per gram: n, number of samples; . not analyzed]

Grab sample_. .. .. Americium- Gross _ .. Plutonium- _... UraniumStatistic . . . Gross beta OQOO/lft Tritium

241 alpha 239,240 233234 235 238

All samples MeanStandard deviationIstquartileMedian3rd quartilen

0.049.052.013.033.050

33

21.845.60

18.4321.4624.1534

26.804.38

24.1126.8229.1034

0.097.099.033.060.125

33

131.248.4

116.3157.2159.13

1.495.551

1.0811.4971.895

33

0.055.035.026.056.088

33

1.471.524

1.1101.3901.940

33

Standley Lake MeanStandard deviation Istquartile Median 3rd quartile

Great Western Reservoir MeanStandard deviation 1st quartile Median 3rd quartile

.023

.026

.009

.013

.02915

.072

.065

.034

.039

.09315

20.664.57

18.1821.6123.9616

23.206.91

18.6721.4027.5515

27.694.12

26.1027.8129.5816

25.244.61

23.3525.1026.3315

.051

.050

.024

.037

.06016

.095

.050

.051

.105

.12414

0

131.248.4

116.3157.2159.13

1.623.685

1.1271.7092.161

16

1.387.390

1.1361.3911.568

14

.050

.040

.009

.053

.08916

.058

.029

.041

.056

.08414

1.567.627.880

1.8622.037

16

1.404.445

1.1421.3811.558

14

Mower Reservoir MeanStandard deviationIstquartile Median3rd quartile n

.062

.013

.055

.060

.068 3

21.311.01

20.86 21.5021.86

3

29.811.37

29.03 29.1730.28 3

.351

.088

.307

.351

.395 3

1.322.302

1.197 1.4061.490

0 3

.065

.040

.047

.071

.086 3

1.272.029

1.260 1.2791.288 3


105°OT35"

39° 53 1 55"


Mower Reservoir

Americium241 m lake-sediment grab samplesSize of symbol is proportional to concentration

0.05 pCi/g

0.1 pCi/g

0.2 PCi/g

Standley Lake

1/2

I1 MILE

I I I0 0.5 1 KILOMETER

Figure 7. Concentrations of 241 Am in lake-sediment grab samples collected from Standley Lake, Great Western Reservoir, and Mower Reservoir.


CJQ.

E <

0.25

0.20

0.15

0.10

0.05

EXPLANATION

3rd QUARTILE

MEDIAN

MEAN

1st QUARTILE

Standley Lake


Mower Reservoir

Figure 8. Distribution of 241 Am concentrations in lake-sediment grab samples collected from Standley Lake, Great Western Reservoir, and Mower Reservoir.

AU.D

0.5

0.4

o °- 3Q.

C

-f 0.2

Q_ o «*CN

<n 0.1 roCN

0

-0.1

n i

EXPLANATION

3rd QUARTILE MEDIAN

MEAN

1st QUARTILE _

I I- -

1 1 1 1 | H |

-

1983-84 1992 Difference

Figure 9A. Distribution of 239.240pu concentrations in 1983-84 and 1992 and differences between matched pairs of lake-sediment grab samples at Standley Lake.


OQ.

CM O> O>

c o

c05 Oc o oD

Q-

B 1.0

oQ.

D Q_

0.6

0.4

0.2

-0.2

EXPLANATION

3rd QUARTILE

MEDIAN

MEAN

1st QUARTILE


Figure 9B. Distribution of 239 - 240pu concentrations in 1983-84 and 1992 and differences between matched pairs of lake-sediment grab samples at Great Western Reservoir.

0.4

0.2

1:1

0.2 0.4 0.6

239,240 pu concentration 1983-84, in pCi/g

Figure 10. Relation between 239-240pu concentrations in lake-sediment grab samples collected at co-located sites in 1983-84 and in 1992 at Standley Lake.


Oa

0.6

1:10.4

0.2

0 0.2 0.4 0.6 0.8 1.0

239,240 pu concentration 1983-84, in pCi/g

Figure 11. Relation between 239 -240pu concentrations in lake-sediment grab samples collected at co-located sites in 1983-84 and in 1992 at Great Western Reservoir.

Lake-Bottom-Sediment Core Samples

1992 Data

As with the lake-sediment grab samples, concen trations of 239 '240Pu and 241 Am in many of the lake-bottom-sediment core samples were greater than the range of background concentrations expected from natural processes and fallout (U.S. Environmental Protection Agency, 1973, 1975). Concentrations of239 '240Pu in lake-bottom-sediment cores ranged from about 0 pCi/g in Standley Lake and Mower Reservoir to 4.030 pCi/g in Great Western Reservoir (table 4) andhad a median of 0.101 pCi/g. Concentrations of 241 Am ranged from 0 pCi/g in Standley Lake and Great West ern Reservoir to 1.016 pCi/g in Great Western Reser voir (table 4) and had a median of 0.021 pCi/g. In most cores, 239 '240pu and 241 Am concentrations exhibited a prominent peak at about the same depth, which occurred at depths ranging from 13 to 31 in. An exam ple is shown in figure 12; 239 -240pu and 241 Am concen trations both peak at a depth of 18 in. in core SED08392. Previous investigators have reported a prominent peak in the concentrations of these radionuclides at similar depths (Hardy and others, 1980; Setlock, 1983;Sackschewsky, 1985; Cohen and others, 1990).

Hardy and others (1980) used the ratio of 241 Am to 239 '240pu to identify the predominant sources of

239,240pu in lake se(jiment. Krey and others (1976)reported that the ratio of 241 Am to 239 '240pu in soil contaminated with Rocky Flats debris was 0.15. Livingston and Bowen (1976) noted that global fallout from 1961-62 nuclear testing averaged about 0.24. Hardy and others (1980) stated that the mean ratio of 241 Am to 239 '240pu in lake sediment below the 239,240pu concentration peak matched that of fallout.The 241 Am to 239 > 240pu ratio above the 239 -240Pu concentration peak was equal to the ratios typical of contaminated Rocky Flats debris (Hardy and others, 1980). Hardy and others (1980) estimated that 74 to90 percent of m240Pu in sediment above the 239 '240Pu concentration peak was derived from Rocky Flats.

By following the method described in Hardy and others (1980), an attempt was made to identify the pre dominant sources of 239 '240Pu in lake-bottom-sediment cores collected in this study. It should be noted that the ratio of 241Am to 239 '240pu increases with time due to decay of 241 Pu (half-life = 14.4 yr) to241 Am after dep osition. The ratio of 241 Am to 239 '240pu in the core from the middle of Standley Lake is plotted with depth in figure 13. In general, the lowest ratios (fig. 13) occurred near the same depth as the highest concentra tions of 239 '240Pu and 241 Am (fig. 12) in this core, but the ratio had considerable scatter, and the data were inconclusive. Assignment of sources based on these results is not warranted. Furthermore, a plot of


Tabl

e 4.

R

adio

nucl

ide

conc

entra

tions

in l

ake-

botto

m-s

edim

ent c

ore

sam

ples

[Mea

sure

men

ts i

n pi

cocu

ries

per

gra

m;

in.,

inch

es;

unce

rtai

ntie

s ar

e in

par

enth

eses

; (n

r),

nr in

dica

tes

unce

rtai

nty

was

not

rep

orte

d; ,

not a

naly

zed]

V) d % 0 > r-

j> j> r- 0) m

w O Tl

33 O O z O c O m

O O O m z 33 d i

W _t

Site

nu

mbe

r1

SED

0819

2

SED

0819

2

SED

0819

2

SED

0819

2

SED

0819

2

SED

0819

2

SED

0819

2

SED

0819

2

SED

0819

2

SED

0819

2

SED

0819

2

SED

0819

2

SED

0819

2

SED

0819

2

SE D

OS

192

SED

0819

2

SED

0819

2

SE D

OS

292

SED

0829

2

SED

0829

2

SED

0829

2

SED

0839

2

SED

0839

2

SED

0839

2

SED

0839

2

SED

0839

2

SED

0839

2

SED

0839

2

SED

0839

2

SED

0839

2

SED

0839

2

SED

0839

2

Sam

pl

ing

dept

h fr

om

(in.) 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 0 2 4 6 0 2 4 6 8 10 12 14 16 18 20

Sam

pl

ing

dept

h to

(in

.) 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 2 4 6 8 2 4 6 8 10 12 14 16 18 20 22

Res

er

voir2

SL SL SL SL SL SL SL SL SL SL SL SL SL SL SL SL SL SL SL SL SL SL SL SL SL SL SL SL SL SL SL SL

Sam

ple

num

ber

SD06

400C

H

SD06

401C

H

SD06

402C

H

SD06

403C

H

SD06

404C

H

SD06

405C

H

SD06

406C

H

SD06

407C

H

SD06

408C

H

SD06

409C

H

SD06

411C

H

SD06

412C

H

SD06

413C

H

SD06

414C

H

SD06

415C

H

SD06

416C

H

SD06

417C

H

SD06

429C

H

SD06

430C

H

SD06

431C

H

SD06

432C

H

SD06

458C

H

SD06

459C

H

SD06

460C

H

SD06

461C

H

SD06

462C

H

SD06

463C

H

SD06

464C

H

SD06

465C

H

SD06

466C

H

SD06

467C

H

SD06

469C

H

Am

eric

ium

-241

0.00

4

.008

.012

.016

.000

.014

.024

.009

.011

.021

.011

.030

.040

.033

.056

.097

.010

.014

.006

.011

.009

.005

.011

.015

.013

.015

.020

.022

.068

.081

.016

.020

(0.0

08)

(nr)

(.00

7)

(nr)

(.00

6)

(.00

5)

(nr)

(.00

7)

(nr)

(nr)

(nr)

(.00

6)

(nr)

(nr)

(nr)

(.00

7)

(nr)

(.02

0)

(.02

0)

(.02

0)

(.02

0)

(.00

8)

(nr)

(.00

6)

(nr)

(.00

5)

(.00

5)

(nr)

(nr)

(nr)

(nr)

(nr)

Plut

oniu

m-

239,

240

0.01

6

.015

.022

.026

.026

.015

.039

.052

.041

.043

.049

.074

.141

.115

.242

.373

.044

.037

.025

.005

.000

.025

.028

.041

.051

.071

.080

.139

.265

.380

.101

.041

(nr)

(nr)

(.01

4)

(nr)

(nr)

(.00

6)

(.00

8)

(nr)

(.00

9)

(nr)

(-01

3)

(-01

1)

(nr)

(.00

6)

(nr)

(nr)

(nr)

(.03

0)

(.03

0)

(.03

0)

(.03

0)

(nr)

(nr)

(.00

5)

(.00

9)

(nr)

(.00

6)

(nr)

(nr)

(.01

1)

(.00

6)

(.00

6)

Polo

nium

- 21

0

0.31

0

.300

.330

.300

.300

.310

.350

.290

.340

.340

.280

.450

1.11

0

1.99

0

1.33

0

1.48

0

1.85

0

1.98

0

1.62

0

1.62

0

--

1.74

0- .980

1.73

0

1.20

0

2.48

0

1.90

0

2.02

0

1.33

0

1.67

0

(0.0

10)

(.01

0)

(.01

0)

(.01

0)

(.01

0)

(.01

0)

(.02

0)

(nr)

(.02

0)

(.01

0)

(.01

0)

(.06

0)

(.05

0)

(.03

0)

(.02

0)

(.03

0)

(.02

0)

(.02

0)

(.03

0)

(.02

0)

--

(.74

0)--

(.03

0)

(.46

0)

(.80

0)

(.32

0)

(.81

0)

(.41

0)

(.71

0)

(.02

0)

Ura

nium

- 23

3,23

4

2.26

0

2.13

0

2.44

0

2.54

0

2.33

0

1.57

0

2.13

0

1.89

0

1.68

0

1.70

0

2.08

0

2.09

0

1.36

0

1.65

0

2.01

0

2.10

0

1.66

0

2.30

6

2.43

8

2.62

0

1.84

6

2.66

0

2.46

0

2.04

0

1.56

0

1.73

0

1.62

0

2.00

0

1.85

0

2.20

0

2.22

0

3.15

0

(0.0

16)

(.01

6)

(-01

7)

(nr)

(-01

7)

(-01

5)

(.01

6)

(-01

4)

(-01

5)

(-01

4)

(.02

0)

(nr)

(.03

2)

(nr)

(.01

6)

(-01

7)

(.01

8)

(.30

0)

(.30

0)

(.30

0)

(.30

0)

(nr)

(.01

6)

(.01

7)

(.01

6)

(.01

7)

(nr)

(.02

0)

(.01

5)

(.01

6)

(.01

5)

(.02

8)

Ura

nium

-235

0.11

4

.063

.127

.084

.090

.059

.112

.055

.056

.067

.161

.040

.059

.076

.126

.130

.044

.090

.032

.169

.044

.056

.135

.114

.063

.056

.103

.066

.051

.055

.110

.133

(0.0

16)

(nr)

(nr)

(.02

2)

(nr)

(nr)

(nr)

(-01

4)

(-01

5)

(nr)

(-01

4)

(nr)

(-01

9)

(nr)

(.016

)

(-01

7)

(nr)

(.30

0)

(.30

0)

(.30

0)

(.30

0)

(nr)

(.01

6)

(.01

7)

(nr)

(.01

7)

(nr)

(.02

0)

(nr)

(.01

6)

(.01

5)

(.02

0)

Ura

nium

-238

2.31

0

2.04

0

2.38

0

2.18

0

1.95

0

1.53

0

2.12

0

1.94

0

1.47

0

1.74

0

2.04

0

2.09

0

1.18

0

1.91

0

1.79

0

1.85

0

1.48

0

2.32

3

2.32

0

2.31

0

1.87

6

2.28

0

2.32

0

1.85

0

1.93

0

1.59

0

1.66

0

1.87

0

1.94

0

2.24

0

2.47

0

2.86

0

(0.0

16)

(nr)

(nr)

(.02

2)

(.01

7)

(-01

5)

(nr)

(-01

4)

(.01

5)

(-01

4)

(-01

4)

(-02

1)

(-01

9)

(.01

6)

(.01

6)

(-01

7)

(nr)

(.30

0)

(.30

0)

(.30

0)

(.30

0)

(-01

9)

(.01

6)

(-01

7)

(nr)

(-01

7)

(-01

5)

(nr)

(.01

5)

(.01

6)

(nr)

(.02

0)

Tabl

e 4.

R

adio

nucl

ide

conc

entra

tions

in l

ake-

botto

m-s

edim

ent c

ore

sam

ples

-Con

tinue

d

SO

i

o 3 cterization

of

r Reservo

ir, J SL w

f5

SL

^

CDCO

0

§

$

?»

§|

o|

3 w

o1 5

' *

«*

l§ I

s I 1 o CD i 5 r 3 f ET »" o 8"1 ^ CD 1 3 33 CD O

JT fi) Q.

Site

nu

mbe

r1

SED

0849

2

SED

0849

2

SED

0849

2

SED

0849

2

SED

0859

2

SED

0859

2

SED

0859

2

SED

0859

2

SED

0859

2

SED

0859

2

SED

0859

2

SED

0869

2

SED

0869

2

SED

0869

2

SED

0869

2

SED

0869

2

SED

0869

2

SED

0869

2

SED

0869

2

SED

0869

2

SED

0869

2

SED

0869

2

SED

0869

2

SED

0869

2

SED

0869

2

SED

0879

2

SED

0879

2

SED

0879

2

SED

0879

2

SED

0879

2

Sam

pl

ing

dept

h fr

om

(in.) 0 2 4 6 0 2 4 6 8 10 12 0 2 4 6 8 10 12 14 16 18 20 22 24 26 0 2 4 6 8

Sam

pl

ing

dept

h to

(in

.) 2 4 6 8 2 4 6 8 10 12 14 2 4 6 8 10 12 14 16 18 20 22 24 26 28 2 4 6 8 10

Res

er

voir

2

SL

SL

SL

SL

GW

GW

GW

GW

GW

GW

GW

GW

GW

GW

GW

GW

GW

GW

GW

GW

GW

GW

GW

GW

GW

GW

GW

GW

GW

GW

Sam

ple

num

ber

SD06

487C

H

SD06

488C

H

SD06

489C

H

SD06

490C

H

SD06

516C

H

SD06

517C

H

SD06

518C

H

SD06

519C

H

SD06

520C

H

SD06

522C

H

SD06

523C

H

SD06

545C

H

SD06

546C

H

SD06

547C

H

SD06

549C

H

SD06

550C

H

SD06

551C

H

SD06

552C

H

SD06

553C

H

SD06

554C

H

SD06

555C

H

SD06

556C

H

SD06

557C

H

SD06

558C

H

SD06

559C

H

SD06

574C

H

SD06

575C

H

SD06

576C

H

SD06

577C

H

SD06

578C

H

Am

eric

ium

-241

0.01

2

.014

.013

.003

.038

.000

.020

.021

.019 -- -- .. -- - -- -- -- -- -- .619

.857

.798

.580

1.01

6

.125

.392

.190

.069

.009

(0.0

20)

(.02

0)

(.02

0)

(.02

0)

(.02

0)

(.02

0)

(.02

0)

(.02

0)

(.02

0)-- - .. -- -- -- - -- - -- (nr)

(.00

4)

(nr)

(.00

5)

(.00

4)

(nr)

(nr)

(.00

3)

(nr)

(nr)

Plut

oniu

m-

239,

240

0.06

0

.097

.006

.007

.135

.116

.060

.045

.078

.109

1.55

6

.125

.192

.136

.181 -- -- .896

1.43

7

2.31

3

2.69

8

3.26

3

3.18

3

1.26

6

2.41

3

.376

1.51

2

.755

.234

.016

(0.0

30)

(.03

0)

(.03

0)

(.03

0)

(.03

0)

(.03

0)

(.03

0)

(.03

0)

(.03

0)

(.01

7)

(nr)

(nr)

(.01

9)

(.00

7)

(nr) -- - (nr)

(nr)

(nr)

(nr)

(.00

8)

(.01

7)

(nr)

(nr)

(nr)

(nr)

(.01

3)

(.02

5)

(-01

3)

Polo

nium

- 21

0

2.88

0

2.13

0

1.70

0

1.70

0

1.35

0

1.23

0

1.11

0

1.06

0

1.15

0

1.12

0

1.58

0

2.89

0

2.64

0

2.41

0

2.39

0

1.77

0

1.63

0

2.23

0

2.17

0

2.27

0

2.32

0

2.25

0

1.89

0

2.18

0

2.17

0

2.02

0

1.97

0

1.88

0

1.86

0

2.01

0

(0.0

20)

(.01

0)

(.02

0)

(.03

0)

(.01

0)

(.01

0)

(.03

0)

(.02

0)

(.03

0)

(.01

0)

(.02

0)

(.02

0)

(.02

0)

(.02

0)

(.01

0)

(.01

0)

(.01

0)

(.02

0)

(.01

0)

(.01

0)

(.02

0)

(.03

0)

(.04

0)

(.01

0)

(.01

0)

(.01

0)

(.01

0)

(.02

0)

(.01

0)

(.01

0)

Ura

nium

- 23

3,23

4

2.51

9

2.34

2

1.85

1

1.33

2

1.05

3

1.06

4

1.24

9

1.10

7

1.06

5

1.10

4

.982

1.34

3

1.35

4

1.50

6

1.56

2

1.37

7

1.15

3

1.33

6

1.32

8

1.32

9

1.18

3

1.35

4

1.86

6

1.39

3

1.39

8

1.15

3

1.69

2

1.15

4

1.68

5

1.32

9

(0.3

00)

(.30

0)

(.30

0)

(.30

0)

(.30

0)

(.30

0)

(.30

0)

(.30

0)

(.30

0)

(.03

1)

(.02

8)

(.03

8)

(.08

4)

(.03

8)

(.02

7)

(.03

8)

(.01

9)

(.07

6)

(.03

6)

(.03

6)

(.05

9)

(.05

7)

(.08

3)

(.03

2)

(.03

7)

(.07

2)

(.03

4)

(.08

0)

(.06

0)

(-04

2)

Ura

nium

-235

0.08

5

.094

.065

.099

.078

.042

.028

.044

.042

.051

.027

.061

.056

.143

.075

.075

.080

.052

.098

.045

.064

(.00

6)

(.00

7)

.033

.063

.041

.014

.070

.098

.043

(0.3

00)

(.30

0)

(.30

0)

(.30

0)

(.30

0)

(.30

0)

(.30

0)

(.30

0)

(.30

0)

(.02

2)

(.02

0)

(.02

2)

(.06

3)

(.03

1)

(nr)

(.02

7)

(nr)

(nr)

(nr)

(.03

6)

(.04

2)

(.04

7)

(.06

4)

(.02

2)

(.04

5)

(.04

2)

(.01

9)

(.04

6)

(.04

6)

(.03

0)

Ura

nium

-238

2.37

3

2.37

0

1.67

4

1.22

4

.996

1.09

4

.802

1.24

3

1.04

4

1.24

4

1.06

9

1.73

7

1.38

0

1.56

1

1.37

2

1.27

1

1.31

5

1.36

2

.997

1.28

8

1.72

1

1.89

5

1.87

2

1.64

7

1.28

1

1.54

1

1.53

1

1.45

5

1.32

9

1.53

5

(0.3

00)

(.30

0)

(.30

0)

(.30

0)

(.30

0)

(.30

0)

(.30

0)

(.30

0)

(.30

0)

(nr)

(nr)

(.02

2)

(.08

9)

(.02

2)

(nr)

(.03

8)

(nr)

(.07

6)

(.02

6)

(.04

5)

(.06

6)

(.07

7)

(.05

2)

(.03

9)

(.05

2)

(.04

2)

(.02

8)

(.06

5)

(.03

2)

(.03

0)

c"c

oO

en "5.

ro0) Q)

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STATISTICAL ANALYSES OF RADIONUCUDE CONCENTRATIONS 21

Tabl

e 4.

R

adio

nucl

ide

conc

entra

tions

in l

ake-

botto

m-s

edim

ent c

ore

sam

ples

-Con

tinue

d

haracterization

lower

Reservoil

"e-3

,

o §

0 §*

Iff

c? "

If

0

<0P

3'

? & i 0 w 0 I

Site

nu

mbe

r1

SED

0899

2

SED

0899

2

SED

0899

2

SED

0899

2

SED

0899

2

SED

0899

2

SED

0899

2

SED

0899

2

SED

0899

2

SED

0909

2

SED

0909

2

SED

0909

2

SED

0909

2

SED

0909

2

SED

0909

2

Sam

pl

ing

dept

h fr

om (in.) 0 2 4 6 8 10 12

14 16 0 2 4 6 8 10

Sam

pl

ing

dept

h to (in

.) 2 4 6 8 10 12 14

16 18 2 4 6 8 10 12

Res

er-

Sam

ple

. .

. ...

. o

T A

men

cium

-241

vo

ir

num

ber

M M M M

M M M

M M M M M

M M M

SD06

690C

H

0.07

6 (n

r)

SD06

691C

H

.113

(n

r)

SD06

692C

H

.175

(n

r)

SD06

693C

H

SD06

695C

H

SD06

696C

H

SD06

697C

H

SD06

698C

H

SD06

699C

H

SD06

719C

H

SD06

720C

H

SD06

721C

H

SD06

722C

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239.240pu concentration against 241 Am:239 '240Pu con centrations in lake-bottom-sediment cores collected from Standley Lake and Great Western Reservoir in 1992 indicates that there is no relation (fig. 14A). A relation was expected because the source of sediment that has high 239 '240pu concentrations is likely to have been Rocky Flats debris, which has a relatively low24 'Am to 239 <240Pu ratio (Krey and others, 1976; Hardy and others, 1980). The reason for the lack of relationbetween 239'240pu concentration and 241 Am: 239 '240Pu concentrations is unknown.

There is a linear relation (^=0.986, p<0.02) between concentrations of 239 '240Pu and 241 Am (figure 14B). This result was expected because 241 Amis a decay product of 241 Pu (half-life = 14.4 yrs) and is useful as an indication of the validity of the analytical results.

Comparison Between 1983-84 and 1992 Data

In 1992, lake-bottom-sediment core samples were collected at four of the sites sampled in 1983 84. Two of these sites were in Standley Lake, and two were in Great Western Reservoir. At each lake, one site was in the deep part of the lake, and the other was in the middle or shallow part. For each coring location, data from 1983 84 and 1992 were matched after taking recent sedimentation into account, assuming a sedi mentation rate of 1.2 to 1.5 in./yr in Standley Lake and 0.9 to 1.2 in/yr in Great Western Reservoir. A range of rates was used for each lake because sedimentation rates generally were higher in the deeper parts of the reservoirs than in the shallow parts (Cohen and others, 1990). Sedimentation rates were estimated based on matching of peaks and inflection points in plots of 239,240pu concentration against depth using 1983 84 and 1992 lake-bottom-sediment core data. The sedi mentation rates used were reasonable based on rates reported by Hardy and others (1980), who estimated an average sedimentation rate of 1.3 in/yr for Standley Lake; sedimentation rates were unavailable for Great Western Reservoir.

Concentration of 239 '240Pu in sediment cores col lected in 1983-84 and in 1992 is plotted with depth for each of the four sites in figures 15A through 15D. In general, trends in concentration to depth were consis tent between 1983-84 and 1992 at all of the sites.Boxplots of 239 '240Pu concentrations, and the differ ences between matched pairs of data, are shown in figure 16A. Measured concentrations tended to be somewhat higher in 1983-84 than in 1992. Although the median difference between the two data sets was statistically significant at p<0.05, most differences between the matched pairs were small. The median

difference was 0.050 pCi/g, which is almost 100 times smaller (two orders of magnitude) than the peak 239,240pu concentrations measured in this study. The mean difference was 0.200 pCi/g. Differences in con centrations tended to increase at higher concentrations(fig. 16b). At 239'240Pu concentrations between 1.5 and 5.5 pCi/g, values from the 1992 study are 10 to 30 percent less than values reported in the 1983 84 study. The differences in measured concentrations may be attributable to spatial variations in sediment and239,240pu

Lake-Water Samples

Summary statistics of dissolved and total radionuclide concentrations in lake-water samples are pre sented in table 5. The median concentration ofdissolved 239 < 240pu in lake water was 0.001, and the maximum concentration was 0.009 pCi/L (table 5). Total 239'240pu concentrations in lake water were somewhat higher; the median concentration was 0.003 pCi/L, and the maximum concentration was 0.030 pCi/L. There are no National Drinking WaterStandards for 239'240Pu, but the Colorado Department of Public Health and Environment has set a water- quality standard of 15 pCi/L and a site-specific water- quality standard of 0.030 pCi/L for Standley Lake and Great Western Reservoir (Colorado codes and regula tions, 3.8.0, 5CCR102-8). 239 > 240Pu and 241 Am are alpha emitters that contribute to the gross alpha con centrations in lake water in Standley Lake, Great West ern Reservoir, and Mower Reservoir. The median dissolved gross alpha concentration was 0.52 pCi/L, and the maximum was 1.9 pCi/L (table 5). These con centrations are substantially below the National Drink ing Water Standard for gross alpha concentration of 15 pCi/L (U.S. Environmental Protection Agency, 1995). Uranium concentrations also were well below the National Drinking Water Standard of 15 pCi/L (U.S. Environmental Protection Agency, 1995); themedian dissolved concentrations for 233 '234u, 235 U,and 238U were 0.500, 0.024, and 0.270 pCi/L, and maximum dissolved concentrations were 1.2, 0.71 and0.73 pCi/L (table 5). The maximum dissolved 241 Am concentration was 0.116 pCi/L, and the maximum total

Am concentration was 0.026 pCi/L. The maximum total tritium concentration was 144.3 pCi/L (dissolved tritium was not measured). National Drinking WaterStandards for 241Am and tritium do not exist. In sum mary, concentrations of all radionuclides measured in lake water at Standley Lake, Great Western Reservoir, and Mower Reservoir were below National Drinking Water Standards for constituents where standards exist.


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There were no statistically significant differ ences in 239'240pu concentrations in surface water col lected at the three study lakes in 1992. However, gross alpha and uranium isotope concentrations tended to be higher in Standley Lake than in the other reservoirs; gross alpha concentrations were higher in Standley

Lake than in Great Western Reservoir (p<0.05) (figs. 17 and 18, table 5). Uranium-233,234 concentrations were higher in Standley Lake than in Mower Reservoir, and uranium-238 concentrations were higher in Stand- ley Lake than in Great Western and Mower Reservoirs (p<0.05). The relatively high concentrations of ura-

105° 07' 35"

39° 53' 55"


Mower Reservoir

Standley Lake

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nium in Standley Lake may be due to weathering of marine shales that contain substantial amounts of ura nium. In southeastern Colorado, uranium concentra tions in the Arkansas River have been found to increase markedly where the river crosses from a predominantly igneous and metamorphic terrain into areas where marine shale and limestone are the dominant bedrock types (Zielinski and others, 1995). Shale bedrock that crops out to the west of Standley Lake contains sub stantial quantities of uranium and, thus, may provide a source of uranium to streams that flow into Standley Lake.

SUMMARY

Median 239'240pu concentrations in lake- sediment grab samples from Standley Lake, Great Western Reservoir, and Mower Reservoir were 0.037, 0.105, and 0.351 pCi/g, and the differences between the reservoirs were statistically significant at p<0.05. The spatial pattern of 239 '240Pu concentration identified in this study, i.e., sediment in lakes closest to Rocky Flats Environmental Technology Site having the highest 239,240pu concentrations, is consistent with 239'240pu concentration patterns previously measured in soil sur rounding Rocky Flats.

Maximum concentrations of 239'240Pu dissolved in lake water were 0.009 pCi/L, well below limits sug gested by the Colorado Department of Public Health and Environment. Dissolved concentrations of grossalpha and 233'234U, 235 U, and 238U were below National Drinking Water Standards in all water sam ples. There were no statistically significant differences in 239'240pu concentrations in surface water collected at the three study lakes in 1992.

A comparison of 239'240Pu concentrations in lake-sediment grab samples collected from Standley Lake and Great Western Reservoir in 1983 84 to con centrations in 1992 revealed no statistically significant difference (p<0.05) in mean values when samples from the lakes were grouped. When samples from each lake were considered separately, and data from the two stud ies were compared, it was determined that there was a small, but statistically significant, difference in 239,240pu concentrations at Great Western Reservoir (p<0.05); concentrations were lower in 1992. The most likely reason for the difference is that sediments deposited in Great Western Reservoir in the 1960's and 70's have been buried beneath newer sediment withlower concentrations of 239'240Pu. The technique used to obtain grab sediment samples collects sediment from


only the upper 2-4 in. of sediments; thus, it is possible that only newer, relatively uncontaminated, sediments were sampled in 1992.

Trends in 239>240pu concentrations with depth identified in the 1992 study were similar to trends observed in the 1983-84 study and other previous stud ies. In the 1992 investigation, maximum 239«240pu concentrations occurred at depths ranging from 13 to 31 in. below the sediment-water interface at most sites. There was a small, but statistically significant, differ ence (p<0.05) in median 239>240pu concentrations in co-located lake-bottom-sediment cores collected in 1983-84 and in 1992. The median difference between data sets was 0.050 pCi/g, and differences tended to increase with concentration; in samples with concen trations above 1.5 pCi/L, concentrations were 10 to 30 percent higher in 1983-84 than in 1992. The differ ences in concentrations could be attributable to spatial variations in sediment and 239»240pu deposition.

REFERENCES CITED

Buchanan, T.J., and Somers, W.P., 1980, Discharge measure ments at gaging stations: U.S. Geological Survey Techniques of Water-Resources Investigations, book 3, chap. A8, 65 p.

Cohen, R.R., Gilbert, D.M., and Wolaver, H.A., 1990, 239'240Pu, 137Cs and 210Pb distributions in Colorado

Front Range lake sediments A report to the Rocky Flats Plant, Rockwell International, and EG&G: Golden, Colorado School of Mines.

EG&G Rocky Flats, Inc., 1991, Standard operatingprocedures: Golden, Colo., Rocky Flats Environmental Monitoring and Assessment Division, 4 v.

Gilliom, R.J., Hirsch, R.M., and Gilroy, E.J., 1984, Effect of censoring trace-level water-quality data on trend- detection capability: Environ. Sci. Technol., v. 18, no. 7, pp. 530-535.

Hardy, E.P., Volchok, H.L., Livingston, H.D., and Burke, J.C., 1980, Time pattern of off-site plutonium deposition from Rocky Flats Plant by lake sediment analyses: Environment International, v. 4, no. 1, pp. 21-30.

Helsel, D.R., and Hirsh, R.M., 1992, Statistical methods in water resources: Amsterdam, Elsevier, Studies in Environmental Science 49, 522 p.

Krey, P.W., and Hardy, E.P., 1970, Plutonium in soil around the Rocky Flats Plant: New York, NY., U.S. Atomic Energy Commission Report HASL-235

Krey, P.W., Hardy, E.P., Volchok, H.L., Toonkel, L.E.,Knuth, R.H., Coppes, M., and Tamura, T, 1976, Pluto nium and americium contamination in Rocky Flats soil,

1973: U.S. Energy Research and Development Admin istration Report HASL-304.

Litoar, M.I., Thompson, M.L., Earth, G.R., and Molzer, PC., 1994, Plutonium-239 + 240 and americium-241 in soils east of Rocky Flats, Colorado: J. Environ. Qual., v. 23, pp. 1231-1239.

Livingston, H.D., and Bowen, V., 1976, Americium in the marine environment-relationships to plutonium, in Environmental Toxicity of Aquatic Radionuclides: Models and Mechanisms, Ann Arbor Science, Ann Arbor, MI, pp. 107-130.

Ott, R.L., 1993, An introduction to statistical methods and data analysis (4th ed.): Duxbury Press, 1051 p.

Porter, P.S., Ward, R.C., and Bell, H.F., 1988, The detection limit: Environ. Sci. Technol., v. 22, no. 8, pp. 856-861.

Ruddy, B.C., Johncox, D.A., and Mueller, O.K., 1992, Meth ods of data collection and water-quality data for Stand- ley Lake, Jefferson County, Colorado, 1989-90: U.S. Geological Survey Open-File Report 92-44,186 p.

Sackschewsky, V.E., 1985, Analysis of Great Western Reservoir plutonium concentration data Internal document: Rocky Flats, Scientific Applications Information Systems Management, Internal Document, February 13,1986, 21 p.

Setlock, G.H., 1983, Great Western Reservoir Study Inter nal document: Rocky Flats, Rockwell International, Health, Safety and Environment, Environmental Anal ysis and Control, 16 p.

Setlock, G.H., and Paricio, M.L., 1984, Standley Lake sedi ment sample collection summary, August, 1984 Internal document: Rocky Flats, Rockwell Interna tional, Health, Safety and Environment, Environmental Analysis and Control, lip.

Thomas, C.W., and Robertson, D.E., 1981, Radionuclide concentrations in reservoirs, streams, and domestic waters near the Rocky Flats Installation: Battelle Pacific Northwest Laboratory, Report PNL-2919, UC-11, April 1981.

U.S. Department of Energy, 1990, General radiochemistry and routine analytical services protocol (GRRASP), Rocky Flats Plant: Golden, Colo.

__1992, RFI/RI final work plan for operable unit 3: Golden, Colo., Rocky Flats Plant, Environmental Restoration Program.

__1994, Rocky Flats Plant site-wide quality-assurance project plan for CERCLA remedial investigations/ feasibility studies and RCRA facility investigations/ corrective measures studies activities.

U.S. Environmental Protection Agency, 1973, Radioactivity levels in the environs of the Rocky Flats Plutonium Plant, Colorado: Denver, U.S. Environmental Protec tion Agency Report SA/TIB-29.

REFERENCES CITED 35

__1975, Plutonium levels in the sediments of areaimpoundments, environs of the Rocky Flats Plutonium Plant, Colorado: Denver, U.S. Environmental Protec tion Agency Report SA/TIB-29.

__1995, Drinking water regulations and health advisories: Washington, D.C., Code of Federal Regulations, Title 40, Part 141. (May 1995.)

Walker, F.W., Parrington, J.R., and Feiner, F, 1989, Nuclides and isotopes (14th ed.), San Jose, Calif., General Electric Company, 57 p.

Zielinski, R.A., Asher-Bolinder, S., and Meier, A.L., 1995, Uraniferous waters of the Arkansas River valley, Colorado, U.S.A. A function of geology and land use: Applied Geochemistry., v. 10, p. 133 144.


APPENDIXES

APPENDIXES 37

APPENDIX A

Lake-sediment grab samples

APPENDIX A 39

Tabl

e A

1.

Rad

ionu

clid

e co

ncen

trat

ions

in l

ake-

sedi

men

t gra

b sa

mpl

es

Characterization

o and

Mowe

r Reserv 2

. tn

V 8 91 O

3>

0*

?§

IS

<S

«-

a<?

Mo"

5'

5 (o

§-2.

"-* 3

(o

a>

8> 3

ro *

* B> a W c E>

S (D ? 1 5' E? 1 C" 5" JD O 2 I « i 3) | O_

[Unc

erta

intie

s ar

e in

par

enth

eses

; nr

indi

cate

s un

cert

aint

y w

as n

ot r

epor

ted;

mea

sure

men

ts i

n pi

cocu

ries

per

gra

m; ,

not

repo

rted

]

Site

nu

mbe

r1

SED

0989

2

SED

0999

2

SED

100

92

SED

1019

2

SED

102

92

SED

103

92

SED

104

92

SED

1059

2

SED

106

92

SED

107

92

SED

108

92

SED

109

92

SED

110

92

SED

1119

2

SED

1129

2

SED

11 3

92

SED

128

92

SED

1309

2

SED

1319

2

SED

1339

2

SED

1349

2

SED

1359

2

SED

1369

2

SED

1379

2

SED

1399

2

SED

1419

2

SED

143

92

SED

144

92

SED

1459

2

SED

1469

2

SED

147

92

SED

158

92

SED

1609

2

SED

1619

2

Res

er-

Sam

ple

voir2

nu

mbe

r

SL SL SL SL SL SL SL SL SL SL SL SL SL SL SL SL GW

GW

GW

GW

GW

GW

GW

GW

GW

GW

GW

GW

GW

GW

GW M M M

SD06

104C

H

SD06

105C

H

SD06

106C

H

SD06

107C

H

SD06

108C

H

SD06

109C

H

SD06

111C

H

SD06

112C

H

SD06

113C

H

SD06

114C

H

SD06

115C

H

SD06

116C

H

SD06

117C

H

SD06

118C

H

SD06

119C

H

SD06

120C

H

SD06

132C

H

SD06

134C

H

SD06

135C

H

SD06

137C

H

SD06

138C

H

SD06

140C

H

SD06

141C

H

SD06

142C

H

SD06

144C

H

SD06

146C

H

SD06

148C

H

SD06

149C

H

SD06

131C

H

SD06

129C

H

SD06

130C

H

SD06

160C

H

SD06

162C

H

SD06

154C

H

Sam

ple

date

09-0

4-92

09-0

3-92

09-0

4-92

09-0

4-92

09-0

4-92

09-0

4-92

09-0

4-92

09-0

3-92

09-0

4-92

09-0

3-92

09-0

4-92

09-0

4-92

09-0

3-92

09-0

3-92

09-0

3-92

09-0

3-92

08-2

7-92

08-2

7-92

08-2

7-92

08-2

7-92

08-2

7-92

08-2

8-92

08-2

7-92

08-2

7-92

08-2

7-92

08-2

7-92

08-2

7-92

08-2

8-92

09-0

2-92

09-0

2-92

09-0

2-92

09-1

0-92

09-1

0-92

09-1

0-92

Am

eric

ium

-241

0.04

9

.018

.005

.010

.010

.009

.008

.027

.007

.030

.013

.033

.017

.004

.103 ~ .033

.027

.047

.035

.206

.039

.192

.063

.123

.013

.164

.013

.038

.036

.050

.050

.075

.060

(0.0

06)

(nr)

(nr)

(nr)

(nr)

(nr)

(nr)

(nr)

(nr)

(nr)

(nr)

(nr)

(nr)

(nr)

(nr) ~ (nr)

(nr)

(nr)

(nr)

(nr)

(nr)

(nr)

(nr)

(nr)

(nr)

(nr)

(nr)

(.00

5)

(nr)

(nr)

(.00

5)

(nr)

(nr)

Gro

ss a

lpha

20.8

10

21.8

00

18.2

10

23.8

90

24.1

60

23.7

70

22.3

90

28.1

00

24.2

80

12.8

00

12.2

80

21.4

10

25.1

00

14.3

00

18.1

00

19.1

00

20.0

00

36.0

00

24.1

00

34.0

00

21.4

00

19.7

00

30.3

00

24.8

00

23.4

00

17.8

00

31.2

00

12.5

00

15.5

00

18.2

10

19.1

20

21.5

00

22.2

10

20.2

20

(2.2

00)

(1.8

00)

(2.6

00)

(2.4

00)

(2.3

00)

(2.9

00)

(3.0

00)

(2.4

00)

(2.6

00)

(1.8

00)

(3.2

00)

(1.9

00)

(2.0

00)

(2.1

00)

(4.2

00)

(1.9

00)

(4.2

00)

(1.8

00)

(2.2

00)

(2.0

00)

(2.4

00)

(2.1

00)

(1.8

00)

(2.9

00)

(1.1

00)

(1.9

00)

(2.4

00)

(2.4

00)

(2.9

00)

(3.0

00)

(2.8

00)

(2.6

00)

(3.0

00)

(2.3

00)

Gro

ss b

eta

33.0

80

22.6

00

29.3

00

32.6

60

28.1

50

27.9

70

26.6

40

26.3

00

35.4

70

25.5

00

27.6

40

27.4

70

21.6

00

3.40

0

28.2

00

20.0

00

23.0

00

23.2

00

24.5

00

27.0

00

23.5

00

25.1

00

29.9

00

25.4

00

27.3

00

21.2

00

37.5

00

15.9

00

25.6

60

25.5

00

23.9

80

29.1

70

28.8

80

31.3

90

(2.4

00)

(4.4

00)

(2.6

00)

(2.6

00)

(2.5

00)

(2.3

00)

(2.4

00)

(4.8

00)

(2.5

00)

(4.5

00)

(2.5

00)

(2.5

00)

(4.6

00)

(4.5

00)

(4.7

00)

(4.6

00)

(5.6

00)

(5.8

00)

(5.5

00)

(5.5

00)

(5.9

00)

(4.3

00)

(5.1

00)

(5.4

00)

(5.3

00)

(5.9

00)

(5.6

00)

(4.6

00)

(2.3

00)

(2.6

00)

(2.6

00)

(2.5

00)

(2.3

00)

(2.4

00)

Plut

< 23

<

0.19

0

.060

.033

.039

.032

.038

.037

.073

.027

.045

.017

.144

.001

.015

.060

.012

.046

.042

.106 -- .103

.140

.119

.106

.094

.025

.125

.014

.153

.067

.187

.263

.439

.351

iniu

m-

_ ...

>,

240

Trltl

Um

-

(0.0

08)

(nr)

(.02

0)

(nr)

(.01

1)

(.00

8)

(nr)

(nr)

(.00

8)

(.00

8)

(.01

5)

(.01

2)

(nr)

(nr)

(nr)

(nr)

(nr)

(nr)

(nr)

(.00

9)

(nr)

(nr)

(.01

2)

(.011

)

(nr)

(nr)

(nr)

(.00

8)

160.

900

(680

)

(nr)

15

7.20

0 (6

80)

(nr)

75

.340

(6

80)

(nr)

(nr)

(.01

4)

Ura

nium

233,

234

2.24

8

0.78

1

1.54

5

2.67

1

1.71

7

2.13

5

1.92

2

2.62

0

1.89

5

1.70

0

1.21

2

2.24

0

.731

.877

1.21

0

. 46

7

_ . 92

9

. 74

9

1.33

0

1.58

0

1.36

0

2.17

0

1.95

0

1.59

0

1.53

0

1.30

0

.923

1.49

7

1.08

1

1.42

2

.987

1.57

4

1.40

6

(0.0

31)

(.01

0)

(.05

8)

(.06

9)

(.03

8)

(.05

2)

(.04

2)

(.02

1)

(.06

3)

(nr)

(nr)

(.05

7)

(nr)

(nr)

(nr)

(nr) .. (nr)

(.01

6)

(nr)

(nr)

(.02

2)

(nr)

(nr)

(nr)

(nr)

(nr)

(nr)

(.03

5)

(.04

6)

(.03

1)

(.04

4)

(.03

6)

(.03

4)

235

0.09

2

.038

(.00

2)

.088

.092

.098

.056

.061

. 11

5

.065

.026

.050

. 000

.010

.000

.008 .034

.016

.041

.094

. 085

.063

.100

.048

.043

.090

.008

.080

.062

.050

. 10

2

.071

.023

(0.0

22)

(nr)

(nrj

(.04

9)

(nr)

(.03

0)

(nr)

(nr)

(.05

1)

(nr)

(nr)

(nr)

(nr)

(nr)

(nr)

(nr) .. (nr)

(nr)

(nr)

(nr)

(nr)

(nr)

(nr)

(nr)

(nr)

(nr)

(nr)

(.02

4)

(nr)

(.02

2)

(.03

1)

(.02

5)

(nr)

238

2.18

7

0.62

8

1.52

8

2.22

6

2.01

0

2.11

6

1.82

4

2.37

0

1.97

2

1.90

0

1.20

9

1.94

0

. 89

0

.848

.812

.617

1.04

0

.733

1.39

0

1.55

0

1.60

0

2.27

0

2.20

0

1.56

0

1.11

0

1.48

0

.775

1.33

6

1.23

9

1.37

2

1.24

1

1.29

7

1.27

9

(0.0

22)

(nr)

(.04

1)

(.06

9)

(.03

8)

(.06

0)

(.03

0)

(nr)

(.03

6)

(nr)

(.02

7)

(.04

6)

(nr)

(nr)

(nr)

(nr) .. (nr)

(nr)

(nr)

(nr)

(nr)

(nr)

(nr)

(nr)

(nr)

(nr)

(nr)

(.02

4)

(.04

6)

(.02

2)

(.04

4)

(.02

5)

(.03

4)

'See

fig

ure

2for

loca

tion

of si

tes

on S

tand

ley

Lak

e, f

igur

e 3

for

site

s on

Gre

at W

este

rn R

eser

voir

, an

d fi

gure

4 f

or s

ites

on M

ower

Res

ervo

ir.

Cod

es f

or la

kes

incl

ude:

SL

=Sta

ndle

y L

ake,

GW

=Gre

at W

este

rn R

eser

voir

, an

d M

=M

ower

Res

ervo

ir.

Tabl

e A

2.

Che

mic

al c

once

ntra

tions

in l

ake-

sedi

men

t gra

b sa

mpl

es

[Mea

sure

men

ts in

mill

igra

ms

per

kilo

gram

exc

ept t

otal

org

anic

car

bon,

whi

ch is

in

perc

ent;

--, n

ot re

porte

d]

Site

nu

mbe

r1SE

D09

892

SED

0999

2

SED

1009

2

SED

1019

2

SED

1029

2

SED

1039

2

SED

1049

2

SED

1059

2

SED

1069

2

SED

1079

2

SED

1089

2

SED

1099

2

SED

1109

2

SED

1119

2

SED

1129

2

SED

1139

2

SED

1289

2

SED

1309

2

SED

1319

2

SED

1339

2

SED

1349

2

SED

1359

2

SED

1369

2

SED

1379

2

SED

1399

2

SED

1419

2

SED

1439

2

SED

1449

2

SED

1459

2

SED

1469

2

^

SED

1479

2m 2

SED

1589

2

>

SED

1609

2

SED

1619

2

Res

er

voir

2


GW

GW

GW

GW

GW

GW

GW

GW

GW

GW

GW

GW

GW

GW M M M

Sam

ple

num

ber

SD06

104C

H

SD06

105C

H

SD06

106C

H

SD06

107C

H

SD06

108C

H

SD06

109C

H

SD06

111C

H

SD06

112C

H

SD06

113C

H

SD06

114C

H

SD06

115C

H

SD06

116C

H

SD06

117C

H

SD06

118C

H

SD06

119C

H

SD06

120C

H

SD06

132C

H

SD06

134C

H

SD06

135C

H

SD06

137C

H

SD06

138C

H

SD06

140C

HSD

0614

1CH

SD06

142C

H

SD06

144C

H

SD06

146C

H

SD06

148C

H

SD06

149C

H

SD06

131C

H

SD06

129C

H

SD06

130C

H

SD06

160C

H

SD06

162C

H

SD06

154C

H

Sam

ple

date

09-0

4-92

09-0

3-92

09-0

4-92

09-0

4-92

09-0

4-92

09-0

4-92

09-0

4-92

09-0

3-92

09-0

4-92

09-0

3-92

09-0

4-92

09-0

4-92

09-0

3-92

09-0

3-92

09-0

3-92

09-0

3-92

08-2

7-92

08-2

7-92

08-2

7-92

08-2

7-92

08-2

7-92

08-2

8-92

08-2

7-92

08-2

7-92

08-2

7-92

08-2

7-92

08-2

7-92

08-2

8-92

09-0

2-92

09-0

2-92

09-0

2-92

09-1

0-92

09-1

0-92

09-1

0-92

5

Det

ectio

n lim

it

Alu

m

inum

21,0

00

13,9

00

6,47

0

21,7

00

23,5

00

14,5

00

13,4

00

9,21

0

17,7

00

13,3

00

5,38

0

16,8

00

12,4

00

4,38

0

3,69

0

10,5

00

5,72

0

11,2

00

5,32

0

5,68

0

13,4

00

10,4

00

11,6

00

11,1

00

14,4

00

8,50

0

8,81

0

11,9

00

11,5

00

10,6

00

8,96

0

9,07

0

18,3

00

16,3

00 200

Ars

e

nic

11.3

12.7 5.3

11.6

10.9 7.3

5.5

8.5

12.9 8.9

3.4

9.0

11.4 4.7

5.7

16.8 3.6

5.7

3.6

3.2

7.1

5.3

5.7

5.4

5.8

3.6

4.6

4.4

6.2

6.3

6.6

3.6

10.4 2.7

10

Bar

iu

m 171

145 94 182

195

123 97 152

167

143 78 130

120 40 36 156

146

129 80 86 156

147

152

160

168

182

125

119

117

126

119

133

250

213

200

Ber

yl

lium 1.3

1.0

0.6

1.6

1.6

1.1 0.8

0.8 1.3

0.9

0.4

1.1 1.1

0.3

0.3

0.8

0.6

0.9

0.6

0.6 1.2

1.0

1.0

1.2

1.1

0.8

0.9

0.9 1.0

1.0

1.0

0.8 1.0

1.5

5

Cad

m

ium

2.8

4.2

0.5

4.2

2.3

4.2 1.7

2.5 - 2.6

0.4

2.4

4.6

0.7

0.5

5.0

0.4

0.5

0.4

0.5 1.2

0.8 1.3

1.2

0.9

0.4

0.7

0.5 1.4

0.8 1.3

0.7 ~ ~ 5

Cal

ci

um5,

810

5,44

0

6,86

0

6,00

0

6,60

0

4,37

0

3,75

0

3,65

0

5,67

0

4,30

0

13,3

004,

440

4,57

0

3,74

0

2,01

0

3,71

0

6,53

0

5,41

0

3,51

0

5,10

0

5,69

0

5,59

0

5,76

0

6,66

0

5,97

0

33,9

00

5,36

0

4,23

0

4,54

0

5,84

0

4,77

0

18,8

00

42,0

00

13,3

00

5,00

0

Ces

iu

m -- 24.6

14.9 - -- 18.7

18.1

14.7 ~ 14.8

14.2 - 19.8

14.2

16.7

15.3

14.1

15.2

15.8

14.9

25.8

25.7

29.5

27.3

29.7

13.8

22.5

16.5

20.8

21.9

22.1

24.3

69.8 -

1,00

0

Chr

o

miu

m

19.3

18.0 6.0

19.6

18.9

16.2

13.0

13.5

17.0

18.3 5.1

15.8

16.0 6.6

6.2

16.2 6.7

12.4 6.5

6.3

13.6

11.5

12.0

13.2

14.9 8.8

10.3

12.3

13.8

12.3

10.6

10.5

22.1

17.6

10

Cob

alt

10.7

11.9 6.0

12.4

11.5

10.3 7.5

6.8

10.3 8.6

3.5

8.9

9.9

3.9

3.4

8.7

6.7

8.4

7.5

5.0

9.6

9.4

9.8

11.2

10.3 9.9

8.7

7.6

8.9

9.0

9.3

5.5

8.1

9.7

50

Cop

per

176

145 15 153

163

105 82 106

157

133 14 111

110 19 21 167 18 33 26 28 109 93 111

126

115 19 74 40 77 59 73 12 22 ,25 25

Iron

23,7

00

20,1

00

11,9

00

24,5

00

27,0

00

19,6

00

14,4

00

16,5

00

23,2

00

19,2

00

7,69

0

18,4

00

21,0

00

8,02

0

8,69

0

20,2

00

9,22

0

19,0

00

12,1

00

11,5

00

17,9

00

14,7

00

17,0

00

17,7

00

18,5

00

12,1

00

13,6

00

15,8

00

14,5

00

13,9

00

13,3

00

10,8

00

22,3

00

21,3

00 100

Lead

126

108 22 127

129 77 51 78 148

133 12 83 90 24 19 190 16 24 19 21 54 46 64 64 61 17 43 28 35 32 36 23 37 34 3

Lith

iu

m 12 12 5 16 14 11 10 9 11 12 6 12 10 5 4 10 5 10 4 6 10 9 9 9 11 9 8 10 10 10 9 7 10 12 100

Mag

nesi

um

4,77

0

3,94

0

1,64

0

4,95

0

5,34

0

3,62

0

2,86

0

2,81

0

4,49

0

3,44

0

1,73

0

3,82

0

3,47

0

1,54

0

1,06

0

3,58

0

1,98

0

3,05

0

1,51

0

2,10

0

3,55

0

3,03

0

3,35

0

3,45

0

3,72

0

3,11

0

2,79

0

2,72

0

2,89

0

2,99

0

2,55

0

2,48

0

4,69

0

4,62

0

5,00

0

42

Characterizati

and

Mower

Re 0

O

Q

32

oo

*--S

? SI 3* 0

3)

H II

of

0_ »

o" 5

'tt

o>

Q. n

0

&"o

^ M§ Q.

(O c 1" <D £ 91 5' 1 9:

C yc O 1 $ (D 3 3)

(D

£ (0 O.

Tabl

e A

2. C

hem

ical

Site

nu

mbe

r1

SED

0989

2

SED

0999

2

SED

1009

2

SED

1019

2

SED

1029

2

SED

1039

2

SED

1049

2

SED

1059

2

SED

1069

2

SED

1079

2

SED

1089

2

SED

1099

2

SED

1109

2

SED

1119

2

SED

1129

2

SED

1139

2

SED

1289

2

SED

1309

2

SED

1319

2

SED

1339

2

SED

1349

2

SED

1359

2

SED

1369

2

SED

1379

2

SED

1399

2

SED

1419

2

SED

1439

2

SED

1449

2

SED

1459

2

SED

1469

2

SED

1479

2

SED

1589

2

SED

1609

2

SED

1619

2

Res

er

voir2 SL SL SL SL SL SL SL SL SL SL SL SL SL SL SL SL G

W

GW

GW

GW

GW

GW

GW

GW

GW

GW

GW

GW

GW

GW

GW M M M

conc

entra

tions

for l

ake-

sedi

men

t gra

b sa

mpl

es-C

ontin

ued

Sam

ple

num

ber

SD06

104C

H

SD06

105C

H

SD06

106C

H

SD06

107C

H

SD06

108C

H

SD06

109C

H

SD06

111C

H

SD06

112C

H

SD06

113C

H

SD06

114C

H

SD06

115C

H

SD06

116C

H

SD06

117C

H

SD06

118C

H

SD06

119C

H

SD06

120C

H

SD06

132C

H

SD06

134C

H

SD06

135C

H

SD06

137C

H

SD06

138C

H

SD06

140C

H

SD06

141C

H

SD06

142C

H

SD06

144C

H

SD06

146C

H

SD06

148C

H

SD06

149C

H

SD06

131C

H

SD06

129C

H

SD06

130C

H

SD06

160C

H

SD06

162C

H

SD06

154C

H

Sam

ple

date

09-0

4-92

09-0

3-92

09-0

4-92

09-0

4-92

09-0

4-92

09-0

4-92

09-0

4-92

09-0

3-92

09-0

4-92

09-0

3-92

09-0

4-92

09-0

4-92

09-0

3-92

09-0

3-92

09-0

3-92

09-0

3-92

08-2

7-92

08-2

7-92

08-2

7-92

08-2

7-92

08-2

7-92

08-2

8-92

08-2

7-92

08-2

7-92

08-2

7-92

08-2

7-92

08-2

7-92

08-2

8-92

09-0

2-92

09-0

2-92

09-0

2-92

09-1

0-92

09-1

0-92

09-1

0-92

Det

ectio

n lim

it

Man

ga

nese

1,25

0

698

519

1,41

0

1,88

0

853

405

313

2,01

0

363

182

711

930

234

292

385

164

468

255

234

648

455

813

731

751

272

544

495

416

337

501

169

485

241 15

Mer

cu

ry

0.60

0.16

0.12

0.28

0.31

0.29

0.14

0.14

0.37

0.12

0.11

0.22

0.17

0.07

0.08

0.08

0.06

0.08

0.06

0.08

0.14

0.12

0.12

0.14

0.13

0.07

0.11

0.08

0.10

0.10

0.15

0.11 - - 0.2

Mol

yb

denu

m

- 2.2

0.5 .. 0.6

0.6

0.7 -- 3.8

0.5 -- 0.7

0.5

0.6

0.5

0.5

0.5

0.6

0.5

2.5

1.0

1.8

1.4

1.7

0.6

1.0

0.6

0.7

0.8

0.8

0.8 - -

200

Nic

kel

19.4

23.2 8.2

20.9

20.6

18.3

14.5

14.2

19.4

20.2 7.6

15.2

17.7 8.2

7.5

17.3

11.5

17.3

11.5 9.9

17.7

15.7

16.7

18.1

18.0

14.0

15.6

15.0

16.1

16.9

16.7

10.5

15.3

18.6

40

Pota

s

sium

3,41

0

2,91

0

756

3,45

0

3,63

0

2,72

0

2,15

0

2,20

0

3,04

0

2,88

0

861

2,82

0

2,48

0

1,01

0

846

2,97

0

937

1,69

0

964

881

2,22

0

1,85

0

2,01

0

2,05

0

2,36

0

1,06

0

1,53

0

1,75

0

1,84

0

1,69

0

1,48

0

1,98

0

3,45

0

3,24

0

5,00

0

Sele

n

ium -- 1.8

1.1 7.

1 1.5

1.1

- 1.1

1.0

- 1.4

1.0

1.2

1.1

- - ~ ~ .. -- -- ~ - - - 2.0

4.0

1.6

1.9

5.7

~ 5

Sil

ver -- 3.4

.. 3.1 .. 2.4

1.3

3.0

-- 4.0

_ - 2.4

1.0

1.3

4.9

1.3

2.3

1.6

1.5

2.2

1.9

2.5

3.1

2.8

1.1

1.6

1.2

2.0

1.6

1.6

1.7

~ - 10

Sod

iu

m 271

145 92 276

285

148

122

102

280

152 74 195

135 67 64 131

138

146 73 206

172

166

142

142

218

201

138

130

136

148

156

171

430

373

5,00

0

Stro

n

tium

62.3

53.6

37.1

64.6

69.1

44.5

41.1

41.5

57.1

46.5

59.7

48.7

44.9

17.6

15.1

38.8

40.2

45.4

26.7

46.6

54.6

48.6

51.2

51.8

56.1

154.

0

46.7

41.8

47.0

52.8

45.3

69.5

190.

0

78.4

200

Thal

liu

m - 0.86

1.10 .. 1.40

1.50

0.51

3.90

0.53

1.00 -- 0.65

0.48

0.55

0.50

0.48

0.53

0.46

0.50

0.85

0.95

1.00

0.95

1.00

0.45

0.85

0.56

1.60

1.60

1.60

0.62 - -

10

Tin -- 6.8

2.0 __ ._ _ 2.5

4.7 - 4.4

2.2

5.2

5.4

3.0

4.6

5.9

1.7

1.9

1.6

1.8

3.2

3.2

3.7

3.4

3.7

1.7

4.4

2.6

4.8

6.1

3.2

16.4

51.4

33.3

200

Van

a

dium 41

.2

34.9

16.8

43.9

45.2

31.1

27.0

25.8

38.9

31.9

12.8

34.1

33.1

13.2

15.8

31.0

18.2

33.1

20.5

21.7

36.8

33.6

35.0

34.7

37.9

23.7

27.7

32.7

30.3

29.6

27.9

22.5

42.3

45.4

50

Zinc 89

4

1,12

0

148

1,01

0

918

973

534

426

859

838 72 743

1,00

0

200

170

738 55 166

101

100

434

296

440

496

449 75 304

143

334

247

326 46 100 87 20

Cya

ni

de -- 1.2

0.8 _ .. 1.0

0.9

0.7 -- 0.7

0.8 ~ 1.0

0.8

0.8

0.8

0.7

0.8

0.7

0.8

1.4

1.2

1.4

1.4

1.4

0.7

1.2

0.8

1.0

1.2

1.1

1.2 - -

10

Tota

l or

gani

c ca

rbon

-- - .. .. 0.16

0.50 -- -- __ - - -- 0.26 - - - 0.26 -- - - - - - 0.33 -- - - - 0.5

'See

fig

ure

2 fo

r loc

atio

n of

site

s on

Sta

ndle

y L

ake,

fig

ure

3 fo

r si

tes

on G

reat

Wes

tern

Res

ervo

ir,

and

figu

re 4

for

site

s on

Mow

er R

eser

voir

. 2C

odes

for

lake

s in

clud

e:

SL=S

tand

ley

Lak

e, G

W=G

reat

Wes

tern

Res

ervo

ir,

and

M=

Mow

er R

eser

voir

.

APPENDIX B

Lake-bottom-sediment core samples

APPENDIX B 43

Table B1. Lake-bottom-sediment core descriptions

[in., inches]

Depth fromtop Color Texture(in.)

Other features/observations

0-0.500.50-3.53.5-6.06.0-8.08.0-9.0

9.0-14.014.0-17.017.0-19.019.0-22.522.5-25.025.0-26.526.5-28.528.5-30.530.5-35.035.0-36.0

0-0.750.75-3.03.0-4.04.0-9.0

9.0-12.012.0-15.515.5-22.022.0-22.5

0-0.500.50-1.51.5-2.52.5-4.04.0-5.05.0-6.06.0-8.0

0-1.01.0-4.04.0-5.05.0-6.06.0-9.0

OliveOlive grayDark olive grayOlive grayDark grayOlive grayOlive grayBlackOlive grayDark olive grayOlive grayDark olive grayOlive grayDark olive grayBlack

Olive grayDark olive grayOliveVery dark grayDark olive grayBlackOlive grayOlive gray

Olive brownOlive grayDark olive grayVery dark grayOlive grayVery dark grayDark gray

OliveOlive grayVery dark grayDark grayOlive gray

Standley Lake (Site ID: SED08192) September 8,1992

Silt Abundant fine-grained organic particles, wetClayey silt Very wet, fine-grained organic particlesClayey silt Roots, stems, slight H2S odor, wetClayey silt Less organics, no roots/stems, wetSilty clay Wet, some stemsSilty clay Abundant root hairs, stems, organic particles, wetSilty clay Root hairs, stems, fine-grained organic, wetClay Drier, root hairsClay Mottled, H2S odor, root hairsClay Stems, root hairs (long strands)Sand (silty) Very coarse, stem and bark piecesSilty clay Coarse root, stems, root hairsSilty clay Finer root hairs, no stems, drierClay Drier, few root hairs, some grassClay Very few organics, slight H2 S odor


Silt Very wet, fine-grained organicsSilt Strong H2S odor, very wetSilt Strong H2S, more fine-grained organicsClayey silt Strong H2S odor, some root hairs, wetClayey silt Strong H2S odorClayey silt Strong H2S odor, slightly drierClay Very dry, root hairs and stems, abrupt contact at 15.5 in.Clay Drier, compacted, coarser vegetative material


Sand Quartz grains, muscovite, pyrite, slight H2 S odor large bark and stemSilty sand Mineral grains, coarse vegetation, some rootsSilty sand Smaller grain minerals, root and root hairsSilty sand Abundant root hairs and stemsSand Mostly quartz; very coarse stem and root materialClayey silt Drier, coarse rootsClayey silt Dry, very fine-grained minerals, finer roots and root hairs


Silty sand Very wet, very fine-grained organicsSandy silt Coarse quartz grains, very fine-grained organicsSand Coarse organics fragments, detrital stems, some roots, slight H2S odorSilty sand Coarse pebbles, roots and stems, moistClayey sand Abundant root hairs and roots, quartz grains


Table B1. Lake-bottom-sediment core descriptions-Continued

Depth from top (in.)

0-0.250.25-4. 04.0-8.08.0-9.5

9.5-11.011.0-13.513.5-14.514.5-15.5

0-0.500.50-3.03.0-4.54.5-5.55.5-10

0-0.500.50-2.02.0-8.08.0-10.510.5-12.512.5-17.017.0-19.519.5-27.027.0-27.527.5-28.5

0-1.01.0-4.54.5-6.56.5-9.0

9.0-9.759.75-11.011.0-18.518.5-21.021.0-24.0

24.0-31.2531.25-31.5

Color

Dark yellowishVery dark grayBlackDark grayBlackGrayish brownBlackVery dark grayish brown

Dark yellow brownVery dark grayVery dark grayVery dark grayVery dark gray

Light olive brownVery dark grayDark olive grayOlive gray with black streaksOliveDark olive grayVery dark grayVery dark grayBlackDark olive gray

Light olive brownOlive gray (some black)Dark olive grayOlive grayBlackOlive grayOlive grayDark olive grayBlackBlackBlack

Texture Other features/observations

Great Western Reservoir (Site ID: SED08592August 3 1,1992

Sandy silt Very wetSilty clay Wet, minor rootsClay Lots of fine root hairsClayey silt Some root hairsClay Some lighter clay bandsClay Very wetSandy clay Some organic materialsClay Lots of fibers and some iron oxide

Great Western Reservoir (Site ID: SED08792September 1, 1992

Sandy silt Very wetClayey silt H2S odor, no roots, wetSilty clay Pebbles, H2S odor, wetSilty clay Black crumbs (carbonaceous)Clay Lots of roots, root hairs, stems,

(possibly original land surface)

Great Western Reservoir (Site ID: SED08692)September 1, 1992

Silt Oxidized, small worms present, very wetSilt/clayey H2S odor, black area, organicsClayey silt Fine-grained organic material, moderately wetClayey silt Strong H2S odor, moderately wetClayey silt Slight H2S OdorSilt with some Moderately wet

clay Strong H2S, slightly moistSilty clay More organic thin roots/fibersSilty clay Less fibers, moderately H2S odorSilty clay Very slight H2 S odorSilty clay


Silty Oxidized, some organics, very wetClayey silt Fine-grained organics, very wetClayey silt Strong H2 s odor, some black streaks, wetClayey silt Less wet, less streakyClayey silt Some root hairs, stronger H2S odorSilty clay Fine-grained organic particles, wetSilty clay Few root hairs, wetSilty clay Drier, few root hairsSilty clay Stem fragment, root hairs, drier stillClay Pods of organic material, drierClay Mineralization

APPENDIX B 45

Table B1. Lake-bottom-sediment core descriptions-Continued

Depth from top(in.)

0-0.50.5-2.02.0-2.52.5-4.04.0-6.06.0-6.56.5-8.58.5-9.09.0-9.5

0-1.01.0-3.53.5-6.56.5-8.58.5-11.511.5-13.013.0-14.514.5-15.515.5-16.516.5-18.018.0-19.019.0-20.5

0-1.51.5-3.53.5-5.05.0-10.010.0-11.011.0-13.513.5-17.017.0-17.517.5-20.520.5-22.0

0-0.50.5-1.51.5-2.02.0-2.52.5-3.03.0-4.54.5-7.0

7.0-10.2510.25-10.75

Color

Light olive brownLight olive brownOlive brownDark grayish brownLight olive brownLight yellowish brownLight yellowish brownPale yellowLight gray

Very dark gray with blackDark olive grayVery dark grayVery dark grayOlive grayVery dark grayDark grayVery dark grayDark grayDark grayish brownVery dark grayish brownGray

BlackVery dark grayDark grayVery dark grayOlive grayDark grayOlive grayDark grayVery dark grayGray

Dark olive grayDark grayBlackOliveDark olive grayDark grayish brownGrayish brownVery dark grayish brownVery dark gray

Texture Other features/observations


Silty sand Very wet, fine grained, few organicsSandy silt Wet, few organics, mottledSilty clay Wet, very fine-grained, abundant organics, roots, iron stainsClay Some roots and root hairsSilty clay Drier, pods of oxidized organics, roots, root hairsClay Abundant organics, oxidized and reduced areasClay Crumbly root hairs, many small oxidized organicsClay Relatively homogeneous, few organicsClay Few organics, distinct oxidized bands

Mower Reservoir (Site ID: SED08892)September 14, 1992

Silt Very reduced, abundant organic matter, aquatic vegetation, very wetSandy silt Very wet, abundant fine-grained organicsSandy silt Very fine-grained sand, slight H 2S odor, less organic, very wetSandy silt Drier, root hairs and roots, stronger H2S odorClayey silt Slight H2S odor, some root hairsSandy silt H 2S odor, root hairs, roots, stemsClayey silt Very fine-grained organics, wetSandy clay Drier, fine root hairsClayey silt Abundant roots and root hairs, wet, very slight H2S odorSandy clay Dry, abundant stems and rootsSandy clay Drier, dense layer of coarse organic stems, roots and root hairsClay Very little organics, root hairs, dry


Sandy silt Very wet, abundant aquatic plants and fine-grained organicsSilt Abundant fine-grained organics, very wetClayey silt Wet, slight H2S odorSilt Wet, H2 S odorClayey silt DrierClayey sand Wetter, H2S odorSandy clay WetSandy clay Coarser grainSandy clay Finer grainClay Drier


Silty sand Abundant fine-grained organics, some aquatic plants, very wetSandy silt WetSilty sand Wet, H2 S odor, coarse organicsClayey silt with Some pebbles, stems, roots, and root hairs

sand Wet, pebbles, roots and root hairsSilty sand with Lots of roots and root hairs, gravels

gravel Abundant root and root hairs, gravelly with iron stainSandy clay Finer grained, drier, root hairsVery sandy clay Some root hairsSandy claySilty clay


Tabl

e B

2.

Che

mic

al c

once

ntra

tions

in la

ke-b

otto

m-s

edim

ent c

ore

sam

ples

[in.,

inch

es;

--, n

ot r

epor

ted;

mea

sure

men

ts in

mill

igra

ms

per

kilo

gram

]

APPENDIX

DO

Site

nu

mbe

r1

SED

0819

2

SED

0819

2

SED

0819

2

SED

0819

2

SED

0819

2

SED

0819

2

SED

0819

2

SED

0819

2

SED

0819

2

SED

0819

2

SED

0819

2

SED

0819

2

SED

0819

2

SED

0819

2

SED

0819

2

SED

0819

2

SED

0819

2

SED

0829

2

SED

0829

2

SED

0829

2

SED

0829

2

SED

0839

2

SED

0839

2

SED

0839

2

SED

0839

2

SED

0839

2

SED

0839

2

SED

0839

2

SED

0839

2

SED

0839

2

SED

0839

2

SED

0839

2

Sam

pl

ing

dept

h fr

om

(In.

) 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 0 2 4 6 0 2 4 6 8 10

12

14

16 18 20

Sam

pl

ing

dept

h to

(in

.) 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 2 4 6 8 2 4 6 8 10 12

14

16

18 20 22

Res

er

voir

2

SL SL SL SL SL SL SL SL SL SL SL SL SL SL SL SL SL SL SL SL SL SL SL SL SL SL SL

SL

SL

SL SL SL

Sam

ple

num

ber

SD06

400C

H

SD06

401C

H

SD06

402C

H

SD06

403C

H

SD06

404C

H

SD06

405C

H

SD06

406C

H

SD06

407C

H

SD06

408C

H

SD06

409C

H

SD06

411C

H

SD06

412C

H

SD06

413C

H

SD06

414C

H

SD06

415C

H

SD06

416C

H

SD06

417C

H

SD06

429C

H

SD06

430C

H

SD06

431C

H

SD06

432C

H

SD06

458C

H

SD06

459C

H

SD06

460C

H

SD06

461C

H

SD06

462C

H

SD06

463C

H

SD06

464C

H

SD06

465C

H

SD06

466C

H

SD06

467C

H

SD06

469C

H

Alu

m

inum

10,7

00

15,0

00

18,9

00

14,3

00

16,2

00

15,8

00

13,7

00

13,1

00

16,7

00

15,7

00

12,9

00

14,1

00

15,5

00

13,9

00

18,5

00

10,8

00

3,02

0

12,9

00

13,6

00

17,9

00

13,6

00

17,0

00

20,2

00

16,7

00

14,6

00

20,7

00

16,2

00

17,2

00

16,9

00

18,4

00

18,9

00

15,6

00

Ant

i m

ony

5.3

9.2

9.4

8.3

7.5

6.4

7.7

6.7

5.9

7.1

6.7

6.5

6.7

8.2

7.0 -- -- .. -- -- -- -- -- 9.9 -- -- -- -- --

Ars

e

nic

6.6

11.4

12.2

12.5

13.2 9.4

15.3

10.0 8.7

9.9

9.9

11.1

12.4

10.9

13.8 8.5

6.1

15.2 9.0

8.4

6.8

12.7

13.6

11.5

10.9

14.4

11.3

14.8

14.9

16.6

33.8

36.2

Bar

iu

m

115

188

191

173

181

181

178

162

178

199

196

194

198

198

212 92 26 144

151

181

161

188

197

192

174

221

216

211

231

250

214

234

Ber

yl

lium

0.9

1.4

1.6

1.4

1.5

1.3

1.3

1.2

1.2

1.4

1.3

1.4

1.5

1.4

1.5

0.9

0.3

0.8

0.8

1.2

0.9

1.4

1.6

1.4

1.3

1.3

1.3

1.4

1.4

1.5

1.3

1.2

Cad

m

ium

2.4

3.4

3.6

2.8

3.3

2.5

3.7

3.7

3.7

4.2

4.0

4.1

4.4

3.7

4.3

2.5

0.4

4.1

2.7

2.3

2.1

2.9

3.0

3.2

2.8

3.7

3.6

3.5

3.8

4.7

7.0

4.3

Cal

ci

um 4,26

0

6,52

0

7,23

0

6,56

0

6,95

0

6,80

0

6,66

0

7,48

0

7,14

0

10,1

00

7,78

0

7,51

0

10,3

00

10,2

00

9,18

0

3,96

0

1,24

0

3,04

0

3,35

0

4,10

0

3,52

0

6,30

0

6,51

0

7,82

0

7,43

0

9,09

0

8,69

0

7,57

0

9,70

0

7,42

0

6,66

0

4,14

0

Ces

iu

m

17.8

31.0

31.9

28.1

25.2

21.7

26.1

31.7

31.8

29.0

31.7

22.1

31.6

21.1

23.8

19.7

20.1

17.0

14.5

14.3

15.5

-- 40.6

33.3

39.9

30.2

30.2

26.3

31.2

25.8

26.0

18.1

Chr

o

miu

m

11.0

16.2

19.4

15.8

17.7

16.9

16.7

15.0

19.2

19.7

18.2

20.1

23.5

22.8

31.6

12.0 5.8

18.4

17.8

22.7

16.2

17.7

20.2

19.2

17.2

23.9

19.9

24.5

31.0

33.7

31.4

22.4

Cob

alt

7.2

11.7

11.8

10.2

11.6

11.0

11.3

10.8

10.2

12.2

10.5

10.7

12.4

12.2

12.2 8.2

4.1

8.5

8.6

11.0 6.5

10.6

11.1

12.2

10.7

11.5 9.6

10.2

13.3

12.0

16.7

10.9

Cop

per

103

166

171

140

138

117

143

130

125

148

148

165

174

155

179 88 17 165

147

166

104

161

166

142

129

152

160

166

192

186

225

254

Iron

14,6

00

23,7

00

25,9

00

21,0

00

21,7

00

21,9

00

19,1

00

17,9

00

22,3

00

20,5

00

20,5

00

22,0

00

21,3

00

20,4

00

24,6

00

13,8

00

17,2

00

21,0

00

22,1

00

25,8

00

18,6

00

25,8

00

26,9

00

21,8

00

19,3

00

25,7

00

24,9

00

25,6

00

24,5

00

31,4

00

27,6

00

25,2

00

Lead 64 110

109

156

137 87 118

135

110

120

148

151

269

106

166 63 19

328

188

131 84 103

131

105

110

129

127

154

150

180

246

241

Lith

iu

m 8 13 14 13 14 13 12 10 13 13 11 13 14 13 16 9 3 11 11 15 11 13 15 14 13 17 15

15

16

15 16 13

Mag

ne

sium

2,94

0

4,39

0

4,97

0

4,12

0

4,19

0

3,97

0

3,84

0

3,73

0

4,12

0

4,37

0

3,83

0

3,96

0

4,37

0

3,95

0

4,59

0

2,68

0

761

3,79

0

3,73

0

4,71

0

3,17

0

4,56

0

4,99

0

4,37

0

3,99

0

5,02

0

4,26

0

4,36

0

4,63

0

4,78

0

4,70

0

3,97

0

Character!

and

Mowei zation

of

Sele

r Reservo

ir, J 2. o

=K j

f(D

v

?O

,

?3

»

O §

:0

2c

g If; O

3

II Si si B>

£ (0 1 s 1 » 5' ff I 5 CT JF 0 3 0) ^ i » 3D Op

5'

Tabl

e B2

. (-»

hemi

<

Sam

-oi

to

P'in

g oi

te

. ..

. i

dept

h nu

mbe

r1

, r

from (in

.)

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0849

2

SED

0849

2

SED

0849

2

SED

0849

2

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0859

2

SED

0859

2

SED

0859

2

SED

0859

2

SED

0859

2SE

D08

592

SED

0859

2

SED

0869

2

SED

0869

2

SED

0869

2

SED

0869

2

SED

0869

2

SED

0869

2

SED

0869

2

SED

0869

2

SED

0869

2

SED

0869

2

SED

0869

2

SED

0869

2

SED

0869

2

SED

0869

2

SED

0879

2

SED

0879

2

SED

0879

2

SED

0879

2

SED

0879

2

0 2 4 6 0 2 4 6 8 10 12 0 2 4 6 8 10 12 14 16 18 20 22 24 26 0 2 4 6 8

:al c

om

Sam

pl

ing

dept

h to

(in

.) 2 4 6 8 2 4 6 8 10 12 14 2 4 6 8 10 12 14 16 18 20 22 24 26 28 2 4 6 8 10

cent

ratic

Res

er

voir

2

SL SL SL SL GW

GW

GW

GW

GW

GW

GW

GW

GW

GW

GW

GW

GW

GW

GW

GW

GW

GW

GW

GW

GW

GW

GW

GW

GW

GW

>ns

in la

ke-b

ot

Sam

ple

num

ber

SD06

487C

H

SD06

488C

H

SD06

489C

H

SD06

490C

H

SD06

516C

H

SD06

517C

H

SD06

518C

H

SD06

519C

HSD

0652

0CH

SD06

522C

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SD06

523C

H

SD06

545C

H

SD06

546C

H

SD06

547C

H

SD06

549C

H

SD06

550C

H

SD06

551C

H

SD06

552C

H

SD06

553C

H

SD06

554C

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SD06

555C

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SD06

556C

H

SD06

557C

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SD06

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SD06

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SD06

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575C

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SD06

576C

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torn

-sed

imen

t c

Alu

m-

Ant

i- in

um

mon

y

19,5

00

12,7

00

12,6

00

10,9

00

7,39

0

8,91

0

6,71

0

6,67

09,

780

10,5

00

10,7

00

14,4

00

15,3

00

12,2

00

11,9

00

12,3

00

10,7

00

14,4

00

16,2

00

14,4

00

14,1

00

12,6

00

13,0

00

13,4

00

16,4

00

9,37

0

10,1

00

10,8

00

8,99

0

9,26

0

:ore

sar

r

Ars

e

nic

10.8 8.5

7.1

5.7

4.6

4.1

4.1

5.2

4.4

5.1

7.0

6.8

7.5

9.9

6.1

6.5

5.5

6.7

6.9

7.3

5.9

9.7

8.3

7.6

9.0

5.5

10.4 6.5

8.3

3.6

iples

--C

Bar

iu

m

151

135

121

121

106

124

113

133

179

134

129

160

179

153

152

162

146

166

171

189

155

111

179

173

189

116

133

115

123

175

3ont

inui

Ber

yl

lium

1.2

1.1

0.9

0.8

0.7

0.7

0.7

0.5

0.8

0.8

0.8 1.4

1.4

1.3

1.1 1.4

1.2

1.2

1.3 1.2

1.2

1.4

1.3

1.1 1.4

0.9

1.0

0.8

0.9

0.8

ed

Cad

m

ium

3.6

2.7 1.4

0.4

0.4

0.4

0.4

0.4

0.5

0.5

0.4

2.1 1.0

0.8

0.8

0.7

0.6 1.0

1.0

0.9 1.0

1.3

1.7

1.7

2.6

1.0

0.6

0.4

0.4

0.6

Cal

ci

um 5,23

0

4,32

0

3,24

0

3,28

0

5,91

0

5,59

0

5,36

0

7,62

07,

820

7,67

0

4,35

0

5,88

0

6,83

0

6,43

0

6,69

07,

570

7,97

0

6,22

0

6,86

0

8,26

0

15,4

00

11,2

00

7,21

0

7,99

0

10,9

00

4,37

0

4,79

0

5,40

0

5,58

0

5,18

0

Ces

iu

m

24.0

14.4

12.8

13.0

16.7

32.5

20.5

23.1

15.6

15.3

13.8

26.9

39.2

21.7

19.7

23.6

20.5

19.6

33.4

24.8

18.0

19.4

22.8

18.2

20.2

16.4

17.6

14.4

12.7

21.1

Chr

o

miu

m

21.2

17.8

14.7

12.3 8.3

9.7

7.6

6.8

10.2

10.5

12.8

15.7

15.8

13.1

13.0

13.4

10.9

15.7

17.2

16.1

15.6

14.7

15.7

15.9

19.0

10.6

11.7

12.1

10.5

10.6

Cob

alt

14.5 9.6

7.2

7.6

8.5

8.4

8.2

7.9

9.5

7.5

8.7

9.9

9.5

10.0 8.5

9.4

8.5

9.6

10.2 9.1

8.8

9.0

10.7

10.1

11.4 8.1

9.9

8.5

7.5

7.4

Cop

per

133

131 54 27 28 29 28 16 22 24 68 126 97 57 45 45 41 89 114

181

129

207

224

287

216 68 98 38 28 20

Iron

22,0

00

17,3

00

17,5

00

16,2

00

13,6

00

12,7

00

11,3

00

11,5

00

13,0

00

12,4

00

13,4

00

19,1

00

18,8

00

15,5

00

16,8

00

16,4

00

14,7

00

18,5

00

18,7

00

19,5

00

15,8

00

18,1

00

21,0

00

19,4

00

21,5

00

13,1

00

18,3

00

15,7

00

16,8

00

11,2

00

Lea

d

102

143 65 30 19 18 17 16 20 19 26 59 51 47 34 40 33 47 60 54 50 75 95 89 98 33 38 42 36 33

Lith

iu

m 15 12 10 9 6 7 5 6 8 8 10 12 13 11 10 10 9 12 13 12 13 12 11 12 14 9 9 10 9 9

Mag

ne

sium

4,41

0

3,34

0

2,83

0

2,69

0

1,96

0

2,33

0

2,09

0

1,99

02,

850

2,71

0

2,71

0

3,71

0

3,78

0

3,31

0

3,24

0

3,35

0

2,97

0

3,48

0

3,84

0

3,59

0

3,44

0

3,32

0

3,64

0

3,53

0

4,06

0

2,48

0

2,48

0

2,46

0

2,35

0

2,52

0

Tabl

e B

2.

Che

mic

al c

once

ntra

tions

in la

ke-b

otto

m-s

edim

ent c

ore

sam

ples

-Con

tinue

d

APPENDIX

CD

Site

nu

mbe

r1

SED

0919

2

SED

0919

2

SED

0919

2

SED

0919

2

SED

0919

2

SED

0919

2

SED

0919

2

SED

0919

2

SED

0919

2

SED

0919

2

SED

0919

2

SED

0919

2

SED

0919

2

SED

0919

2

SED

0929

2

SED

0929

2

SED

0929

2

SED

0929

2

SED

0929

2

SED

0929

2

SED

0889

2

SED

0889

2

SED

0889

2

SED

0889

2

SED

0889

2

SED

0889

2

SED

0889

2

SED

0889

2

SED

0889

2

SED

0889

2

Sam

pl

ing

dept

h fr

om

(in.) 0 2 4 6 8 10 12 14 16 18 20 22 24 26 0 2 4 6 8 10 0 2 4 6 8 10 12

14

16 18

Sam

pl

ing

dept

h to

(in

.) 2 4 6 8 10 12 14 16 18 20 22 24 26 28 2 4 6 8 10 12 2 4 6 8 10 12 14

16

18

20

Res

er

voir2

GW

GW

GW

GW

GW

GW

GW

GW

GW

GW

GW

GW

GW

GW

GW

GW

GW

GW

GW

GW M M M M M M M

M

M

M

Sam

ple

num

ber

SD06

603C

H

SD06

604C

H

SD06

605C

H

SD06

606C

H

SD06

607C

H

SD06

608C

H

SD06

609C

H

SD06

610C

H

SD06

611C

H

SD06

612C

H

SD06

614C

H

SD06

615C

H

SD06

616C

H

SD06

617C

H

SD06

632C

H

SD06

633C

H

SD06

634C

H

SD06

635C

H

SD06

636C

H

SD06

637C

H

SD06

661C

H

SD06

662C

H

SD06

663C

H

SD06

664C

H

SD06

665C

H

SD06

666C

H

SD06

667C

H

SD06

668C

H

SD06

669C

H

SD06

670C

H

Alu

m

inum

14,3

00

23,8

00

23,9

00

21,5

00

15,8

00

22,8

00

24,0

00

24,0

00

15,9

00

25,3

00

14,9

00

14,6

00

18,1

00

26,1

00

6,34

0

8,83

0

9,26

0

10,8

00

9,53

0

8,87

0

17,9

00

13,8

00

17,7

00

14,6

00

11,3

00

14,5

00

14,5

00

13,1

00

16,0

00

14,1

00

Ant

i- A

rse-

m

ony

nic 7.2

6.2

6.1

5.7

5.3

6.3

7.1

6.1

7.5

5.5

6.2

6.6

7.7

9.7

4.0

4.7

5.1

5.1

8.8

5.1

5.1

3.9

4.2

3.7

3.6

4.7

4.4

5.7

7.4

4.8

Bar

iu

m

142

200

192

176

173

173

186

199

183

196

205

172

184

201 82 172

183

147

168

169

230

175

205

161

169

176

188

186

212

198

Ber

yl

lium 1.1 1.4

1.4

1.2

1.3

1.7

2.3

1.5

1.2

1.5

1.4

1.1

1.2

1.4

0.6

0.8

0.8

0.9

1.0

0.8

1.1

1.1

1.4

1.2

1.0

1.1

1.2

1.1

1.4

1.2

Cad

m

ium

1.0

0.8

0.8

0.8

0.7

0.7

1.8

0.8

0.7

1.0

0.7

1.3

1.8

2.0

0.4

0.4

0.4

0.4

0.5

0.4 0.9

0.8

0.7

0.6

0.5

0.5

0.5

0.5

0.4

Cal

ci

um

5,16

0

6,51

0

6,88

0

6,15

0

7,48

0

7,78

0

6,70

0

65,1

0

7,12

0

15,3

00

10,7

00

9,35

0

9,93

0

9,43

0

3,90

0

7,63

0

7,91

0

8,64

0

12,1

00

7,93

0

21,9

00

6,88

0

9,32

0

9,35

0

9,09

0

11,4

00

11,8

00

6,01

0

6,02

0

5,23

0

Ces

iu

m

27.4

31.9

26.9

25.9

24.4

24.5

25.2

26.6

24.5

20.7

22.4

21.4

21.0

23.1

14.8

12.9

12.7

14.4

15.9

13.8

30.4

25.5

21.8

18.3

16.7

17.9

17.6

17.5

13.5

Chr

o

miu

m

14.9

24.0

24.6

21.9

15.5

23.0

25.2

25.2

17.2

26.0

17.0

15.8

20.2

28.1 7.5

10.5

10.4

11.5

10.2 9.3

18.3

15.6

19.5

17.2

13.3

16.1

16.6

15.3

18.9

16.1

Cob

alt

9.8

11.2

10.2 9.8

10.6

10.6

11.0

11.3

10.8

10.9

10.4

10.3

11.3

12.2 5.9

7.7

7.7

7.6

8.5

7.6

9.5

7.4

9.8

7.4

7.9

8.5

9.0

9.5

9.2

8.3

Cop

per

105

123 67 53 54 60 106

139

194

161

197

229

311

122 20 20 18 19 19 16 58 32 32 25 22 22 23

24

26

22

Iron

16,7

00

23,0

00

22,7

00

20,1

00

16,8

00

19,8

00

23,4

00

23,0

00

19,6

00

21,3

00

21,9

00

18,7

00

20,6

00

25,6

00

9,33

0

13,6

00

13,1

00

12,0

00

14,2

00

11,1

00

22,2

00

16,6

00

19,8

00

16,5

00

15,0

00

16,2

00

16,7

00

15,5

00

17,5

00

16,3

00

Lead 59 51 47 47 37 47 65 72 74 55 67 75 105

126 15 15 18 17 18 15 36 31 28 28 24 26 26

38

50

31

Lith

iu

m 12 18 18 16 14 17 18 19 15 19 13 13 16 20 6 10 9 9 8 7 14 11 16 11 9 12 12

11

13

12

Mag

ne

sium

3,34

0

4,62

0

4,56

0

4,17

0

3,76

0

4,46

0

5,08

0

4,63

0

3,62

0

4,75

0

3610

3,56

0

4,11

0

5,05

0

1,85

0

2,82

0

2,90

0

3,04

0

3,06

0

2,47

0

4,94

0

3,68

0

4,44

0

3,58

0

3,13

0

3,63

0

3,77

0

3,46

0

3,87

0

3,67

0

SE «-i5 *

« i

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J

i

io u** a* U

2l51A _ . E d) ^0 =

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i«EaT.2CD

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i r *i

II^5 k.

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50 Characterization of Selected Radionuclides in Sediment and Surface Water in Standley Lake, Great Western Reservoir, and Mower Reservoir, Jefferson County, Colorado 1992

Tabl

e B

2. C

hem

ical

con

cent

ratio

ns fo

r la

ke-b

otto

m s

edim

ent c

ore

sam

ples

-Con

tinue

d

APPENDIX

B

Site

nu

mbe

r1

SED

0819

2

SED

0819

2

SED

0819

2

SED

0819

2

SED

0819

2

SED

0819

2

SED

0829

2

SED

0829

2

SED

0829

2

SED

0829

2

SED

0839

2

SED

0839

2

SED

0839

2

SED

0839

2

SED

0839

2

SED

0839

2

SED

0839

2

SED

0839

2

SED

0839

2

SED

0839

2

SED

0839

2

SED

0849

2

SED

0849

2

SED

0849

2

SED

0849

2

SED

0859

2

SED

0859

2

SED

0859

2

SED

0859

2

SED

0859

2

SED

0859

2

SED

0859

2

Sam

pl

ing

dept

h fr

om

(in.)

22 24 26 28 30 32 0 2 4 6 0 2 4 6 8 10 12 14 16 18 20 0 2 4 6 0 2 4 6 8 10 12

Sam

pl

ing

dept

h to

(in

.)24 26 28 30 32 34 2 4 6 8 2 4 6 8 10 12 14 16 18 20 22 2 4 6 8 2 4 6 8 10

12 14

Res

er

voir

2

SL SL SL SL SL SL SL SL SL SL SL SL SL SL SL SL SL SL SL SL SL SL SL SL SL GW

GW

GW

GW

GW

GW

GW

Sam

ple

num

ber

SD06

412C

H

SD06

413C

H

SD06

414C

H

SD06

415C

H

SD06

416C

H

SD06

417C

H

SD06

429C

H

SD06

430C

H

SD06

431C

H

SD06

432C

H

SD06

458C

H

SD06

459C

H

SD06

460C

H

SD06

461C

H

SD06

462C

H

SD06

463C

H

SD06

464C

H

SD06

465C

H

SD06

466C

H

SD06

467C

H

SD06

469C

H

SD06

487C

H

SD06

488C

H

SD06

489C

H

SD06

490C

H

SD06

516C

H

SD06

517C

H

SD06

518C

H

SD06

519C

H

SD06

520C

H

SD06

522C

H

SD06

523C

H

Man

ga

nese

1,20

0

784

959

917

424

310

429

346

396

293

1,63

0

1,14

0

973

654

1,01

0

842

941

888

848

877

605

625

357

332

264

316

196

190

200

205

154

157

Mer

cu

ry

0.21

0.21

0.26

0.24

0.24

0.17

0.48

0.39

0.36

0.21

0.22

0.24

0.22

0.40

0.28

0.30

0.31

0.33

0.40

0.41

0.55

0.25

0.27

0.15

0.10

0.07

0.08

0.07

0.07

0.07

0.07

0.07

Mol

yb

denu

m

18.4

12.6

23.7

22.8 0.7

0.4

0.6

0.5

0.5

0.5

-- 1.1

2.8

8.8

13.4

15.7

23.3

11.4 2.6

0.7

0.8

1.8

0.4

0.4

1.2

0.8

1.2

0.5

1.1

1.3

3.2

Nic

kel

21.9

24.9

22.5

23.9

15.5 8.8

15.2

16.2

19.4

13.7

18.6

21.2

22.8

22.0

24.2

21.6

22.0

25.2

22.8

28.7

18.3

23.6

21.4

16.1

15.4

13.6

13.5

12.7

12.3

15.5

13.7

15.3

Pota

s

sium

2,88

0

3,33

0

2,89

0

3,55

0

1,92

0

712

3,55

0

3,20

0

3,79

0

2,66

0

3,07

0

3,59

0

3,15

0

2,91

0

3,66

0

3,12

0

3,24

0

3,31

0

3,54

0

3,70

0

3,18

0

3,58

0

2,79

0

2,86

0

2,66

0

1,13

0

1,36

0

1,06

0

973

1,35

0

1,33

0

1,65

0

Sele

n

ium 1.5

1.6

1.6

1.5

1.3

0.9

1.3

1.2

1.2

1.1 -- 2.2 -- 2.1

2.0

1.9

2.2

1.9

1.7

1.2

1.7

1.2

1.0

0.9

1.0

1.1

1.1

1.1

1.2

1.2

1.1

Sil

ver

2.1

2.6

2.9

2.3

1.9

2.2

6.8

4.9

4.6

1.8

255 2.

4-- 2.

8

3.8

4.3

3.2

5.0

5.0

4.9

2.8

3.5

1.8

1.4

1.9

2.1

1.8

2.2

2.3

2.2

3.6

Sod

iu

m

133

170

154

151

130 59 144

137

187

129

215 67

.6

235

256

355

334

352

449

439

416

323

189

146

123

149 84 121

107

112

170

178

165

Stro

n

tium

65.4

70.1

67.9

71.1

40.7

11.3

37.3

39.1

49.6

44.4

63.9 - 65.0

60.9

78.4

71.1

68.7

71.8

73.4

63.6

54.8

55.1

44.3

38.3

36.9

38.7

43.4

39.2

42.6

58.5

55.0

46.4

Thal

liu

m

1.60

1.60

1.60

1.60

0.63

0.43

1.30

1.20

1.20

1.10 -

2.30 -

0.99

0.93

0.89

1.00

0.88

0.81

0.59

1.70

1.20

0.98

0.87

1.00

1.10

1.00

1.00

1.20

1.10

1.10

Tin

3.6

2.8

3.5

3.0

5.0

3.0

3.1

2.5

3.1

3.5

5.9 -- 4.1 --

11.9 7.2

9.9

7.5

11.4

10.9 6.7 3.8

2.0 -- 1.7

1.8

1.8

1.8

1.9

1.9

1.7

Van

a

dium 34

.0

37.8

35.7

41.2

26.4

32.7

30.4

32.0

40.3

29.5

40.5

46.3

41.9

37.4

45.7

36.8

40.4

42.6

42.9

45.8

39.4

41.6

29.5

33.7

31.2

23.1

25.4

21.2

21.5

25.3

25.2

24.9

Zinc 94

3

1,02

0

859

1,07

0

585

168

708

621

627

428

837

802

802

785

961

931

939

1,14

0

1,20

0

1,66

0

940

990

844

413

121 78 77

74

46

66

65 115

Cya

ni

de i.l l.l 1.1 l.l 0.9

0.6

0.9

0.7

0.8

0.8 - 1.7 -- 1.6

1.4

1.5

1.5

1.4

1.3

0.9

1.2

0.8

0.7

0.6

0.7

0.8

0.8

0.7

0.8

0.8

0.7

52 Characterization

of

and

Mower

Reserve

= w

"7

2.

|8 o £

3 |

§ i

2. o

- S

o <

5 2. o

5' f£ i 1

w S BI Q

.0

) i D) O <D t* 5' I r 0) F o I & 3 3D i o_ ^

laoi

e HZ

. L

Site

nu

mbe

r1

SED

0869

2

SED

0869

2

SED

0869

2

SED

0869

2

SED

0869

2

SED

0869

2

SED

0869

2

SED

0869

2

SED

0869

2

SED

0869

2

SED

0869

2

SED

0869

2

SED

0869

2

SED

0869

2

SED

0879

2

SED

0879

2

SED

0879

2

SED

0879

2

SED

0879

2

SED

0919

2

SED

0919

2

SED

0919

2

SED

0919

2

SED

0919

2

SED

0919

2

SED

0919

2

SED

0919

2

SED

0919

2

SED

0919

2

SED

0919

2

SED

0919

2

SED

0919

2

SED

0919

2

.nem

icai

Sam

pl

ing

dept

h fr

om

(In.) 0 2 4 6 8 10 12 14 16 18 20 22 24 26 0 2 4 6 8 0 2 4 6 8 10 12 14 16 18 20 22 24 26

conc

eni

Sam

pl

ing

dept

h to

(in

.) 2 4 6 8 10 12 14 16 18 20 22 24 26 28 2 4 6 8 10 2 4 6 8 10 12 14 16 18 20 22 24 26 28

[ratio

ns r<

Res

er

voir2

GW

GW

GW

GW

GW

GW

GW

GW

GW

GW

GW

GW

GW

GW

GW

GW

GW

GW

GW

GW

GW

GW

GW

GW

GW

GW

GW

GW

GW

GW

GW

GW

GW

Dr la

Ke-

Don

or

Sam

ple

num

ber

SD06

545C

H

SD06

546C

H

SD06

547C

H

SD06

549C

H

SD06

550C

H

SD06

551C

H

SD06

552C

H

SD06

553C

H

SD06

554C

H

SD06

555C

H

SD06

556C

H

SD06

557C

H

SD06

558C

H

SD06

559C

H

SD06

574C

H

SD06

575C

H

SD06

576C

H

SD06

577C

H

SD06

578C

H

SD06

603C

H

SD06

604C

H

SD06

605C

H

SD06

606C

H

SD06

607C

H

SD06

608C

H

SD06

609C

H

SD06

610C

H

SD06

611C

H

SD06

612C

H

SD06

614C

H

SD06

615C

H

SD06

616C

H

SD06

617C

H

n se

aim

e

Man

ga

nese

111

514

342

423

370

343

427

331

518

273

469

549

573

510

326

290

184

111

164

633

657

500

389

389

337

461

445

570

329

590

456

414

404

nt c

ore

Mer

cu

ry

0.18

0.22

0.26

0.17

0.16

0.16

0.15

0.26

0.21

0.22

0.22

0.29

0.27

0.30

0.16

0.10

0.12

0.11

0.10

0.17

0.17

0.12

0.17

0.15

0.21

0.22

0.26

0.21

0.19

0.20

0.25

0.10

0.28

sam

ples

Mol

yb

denu

m

0.9

0.8

0.7

0.7

0.8

0.7

0.7

0.7

5.0

1.2

3.0

0.7

0.6

0.7

0.6

3.1

0.5

0.4

0.5

0.9

0.9

0.9

0.9

0.8

0.8

0.9

2.4

4.2

1.1

0.8

0.7

0.7

0.8

i~uo

ntm

Nic

kel

18.5

19.2

18.3

16.8

17.8

15.8

17.7

19.9

17.6

18.5

17.2

20.1

18.1

21.4

14.6

16.7

16.3

15.3

14.7

16.1

19.5

18.8

18.3

19.6

20.8

21.6

20.1

17.5

21.2

19.4

19.0

20.9

23.6

uea Po

tas

si

um

2,41

0

2,43

0

2,00

0

1,83

0

1,85

0

1,53

0

2,27

0

2,58

0

2,37

0

2,38

0

2,22

0

2,34

0

2,33

0

2,73

0

1,59

0

1,71

0

1,81

0

1,63

0

1,81

0

2,28

0

3,36

0

3,39

0

3,03

0

2,42

0

3,20

0

3,42

0

3,68

0

2,51

0

3,72

0

2,47

0

2,49

0

3,00

0

4,00

0

Sele

n

ium 1.8

1.9

1.6

1.5

1.6

1.4

1.5

1.5

1.4

1.4

1.4

1.4

1.3

1.4

1.2

1.1

1.0

1.0

1.0

1.7

1.5

1.6

1.5

1.5

1.5

1.4

1.4

1.4

1.3

1.3

1.3

1.2

1.4

Sil

ver

1.9

1.8

1.6

1.4

1.7

1.5

2.1

2.2

3.3

2.7

4.2

8.2

14.1

16.4 1.2

1.7

1.0

0.9

1.0

3.2

2.8

2.8

2.7

1.8

3.4

5.6

3.7

4.1

4.9

5.4

7.9

16.5

9.4

Sod

iu

m

125

122

127

107

122

117

118

131

118

123

130

128

113

134 93 98 107

112

118

119

170

154

147

141

150

161

155

151

154

146

148

153

173

Stro

n

tium

56.2

61.9

57.4

60.5

65.6

64.0

58.9

61.5

64.5

72.3

63.5

59.8

58.8

70.4

42.2

45.2

47.8

48.0

49.6

53.6

72.7

73.9

71.1

70.8

79.7

70.8

71.9

65.0

88.4

72.9

64.2

71.2

81.6

Thal

liu

m

0.65

0.68

0.58

0.55

0.60

0.52

0.53

0.56

0.49

0.50

0.50

0.50

0.48

0.51

0.45

0.39

0.36

0.36

0.36

0.76

0.67

0.70

0.69

0.66

0.67

0.64

0.65

0.63

0.58

0.58

0.57

0.55

0.61

Tin

3.3

3.0

2.7

2.4

2.9

2.5

2.4

2.6

2.6

2.2

2.7

2.5

2.3

2.5

2.0

1.8

1.8

1.6

1.6

5.4

3.6

5.1

4.2

3.0

3.0

4.4

3.3

3.5

3.5

2.8

2.7

2.6

4.2

Van

a

dium 37

.7

41.2

35.1

34.7

35.6

31.0

37.8

42.0

38.5

35.3

34.8

37.3

36.9

44.1

28.9

35.0

33.8

30.8

27.7

34.6

55.9

56.8

50.6

37.5

54.8

55.2

56.6

38.5

58.0

38.2

35.1

43.3

60.4

Zinc 48

0

294

258

154

137

116

197

216

225

168

211

342

284

273

201

129 89 78 63 390

293

264

226

200

203

241

263

239

201

214

347

338

358

Cya

ni

de 1.4

1.3

1.1

1.0

1.1

1.0

1.1

1.1

1.0

0.9

1.0

1.0

0.9

1.0

0.8

0.7

0.7

0.7

0.7

1.5

1.3

1.3

1.3

1.2

1.3

1.3

1.3

1.2

1.1

1.1

1.0

1.1

1.1

Tabl

e B

2.

Che

mic

al c

once

ntra

tions

for

lake

-bot

tom

sed

imen

t cor

e sa

mpl

es-C

ontin

ued

Q

\A

ffi L

< 1

^ a~" F, to

Site

nu

mbe

r1

SED

0929

2

SED

0929

2

SED

0929

2

SED

0929

2

SED

0929

2

SED

0929

2

SED

0889

2

SED

0889

2

SED

0889

2

SED

0889

2

SED

0889

2

SED

0889

2

SED

0889

2

SED

0889

2

SED

0889

2

SED

0889

2

SED

0899

2

SED

0899

2

SED

0899

2

SED

0899

2

SED

0899

2

SED

0899

2

SED

0899

2

SED

0899

2

SED

0899

2

SED

0909

2

SED

0909

2

SED

0909

2

SED

0909

2

SED

0909

2

SED

0909

2

Sam

- Sa

m-

j .L

j .L

Res

er-

dept

h de

pth

^.^

from

to

(in.)

(in.)

0 2

GW

2 4

GW

4 6

GW

6 8

GW

8 10

G

W

10

12

GW

0 2

M

2 4

M

4 6

M

6 8

M

8 10

M

10

12

M

12

14

M

14

16

M

16

18

M

18

20

M

0 2

M

2 4

M

4 6

M

6 8

M

8 10

M

10

12

M

12

14

M

14

16

M

16

18

M

0 2

M

2 4

M

4 6

M

6 8

M

8 10

M

10

12

M

Det

ectio

n lim

it

Sam

ple

num

ber

SD06

632C

H

SD06

633C

H

SD06

634C

H

SD06

635C

H

SD06

636C

H

SD06

637C

H

SD06

661C

H

SD06

662C

H

SD06

663C

H

SD06

664C

H

SD06

665C

H

SD06

666C

H

SD06

667C

H

SD06

668C

H

SD06

669C

H

SD06

670C

H

SD06

690C

H

SD06

691C

H

SD06

692C

H

SD06

693C

H

SD06

695C

H

SD06

696C

H

SD06

697C

H

SD06

698C

H

SD06

699C

H

SD06

719C

H

SD06

720C

H

SD06

721C

H

SD06

722C

H

SD06

723C

H

SD06

724C

H

Man

ga

nese

174

184

162

156

264

153

248

239

207

179

215

213

246

258

233

234

442

265

227

195

191

250

219

219

252

157

179

210

448

389

401 15

Mer

- M

olyb

- cu

ry

denu

m

0.06

0.

5

0.06

0.

4

0.07

0.

4

0.07

0.

5

0.09

0.

5

0.08

0.

5

0.13

1.

0

0.11

0.

9

0.10

0.

7

0.09

0.

6

0.08

0.

6

0.08

0.

6

0.09

0.

6

0.09

0.

6

0.07

0.

5

.. 0.16

1.

1

0.14

0.

9

0.12

0.

7

0.08

0.

5

0.07

0.

5

0.06

0.

5

0.07

0.

5

0.10

0.

6

0.07

0.

5

0.06

0.

4

0.06

0.

4

0.06

0.

4

0.06

0.

4

0.2

200

in L

. i

Pota

s-

Nic

kel

. slum

11.2

1,

040

15.5

1,

420

15.5

1,

380

14.7

1,

370

14.9

1,

180

13.6

1,

100

17.8

3,

540

15.7

2,

750

19.2

3,

520

15.2

2,

900

14.7

2,

290

16.0

2,

910

17.1

2,

960

16.7

2,

760

18.3

3,

420

17.0

2,

950

12.7

2,

900

17.9

3,

860

19.1

3,

800

20.4

3,

950

17.7

2,

850

15.8

2,

630

14.3

2,

560

16.2

3,

030

16.7

3,

020

9.2

1,99

0

9.3

1,72

0

8.8

1,48

0

12.6

1,

550

14.8

2,

650

14.6

2,

360

40

5,00

0

Sele

n-

Sil-

ium

ve

r

1.0

1.1

1.7

1.8

0.8

1.7

1.0

1.3

0.9

1.5

2.5

1.0

2.4

2.2

2.7

1.8

1.7

1.6

1.4

1.3

1.4

1.2

1.3

1.3

1.4

1.3

1.6

1.3

1.1

1.0

6.7

3.5

2.7

2.3

4.3

2.0

2.2

1.5

0.8

1.3

1.4

1.5

1.4

1.7

1.4

1.7

1.4

1.4

1.1

1.1

0.9

0.8

0.9

1.1

0.9

0.9

0.9

0.8

5 10

Sod-

St

ron-

lu

m

tium

75

35.0

129

59.6

148

61.4

192

70.5

224

82.7

189

59.5

364

109.

0

216

54.9

224

63.2

225

53.0

167

51.3

175

57.9

170

59.1

166

47.2

185

52.4

165

45.8

441

151.

0

258

80.2

263

64.8

260

80.4

203

68.9

166

60.9

141

50.9

194

54.8

181

57.2

228

63.6

148

50.2

63

21.2

71

20.7

126

36.5

119

37.8

5,00

0 20

0

Thai

- _

,. Ti

n hu

m

1.00

3.

8

1.00

3.

3

1.10

2.

2

1.10

4.

2

1.10

4.

6

1.00

6.

0

49.7

0.79

27

.3

0.68

26

.9

0.56

18

.3

0.47

14

.6

0.47

14

.5

0.45

15

.4

0.47

14

.5

0.46

13

.0

0.38

14

.6

10.3

36

.4 6.9

2.30

5.

0

2.30

8.

4

1.60

3.

9

1.10

2.

9

1.00

2.

2

1.00

3.

2

1.10

4.

7

0.47

18

.3

0.36

12

.0

0.30

12

.2

0.86

6.

8

0.92

5.

2

0.92

3.

2

10

200

Van

a

dium 17

.2

25.5

25.5

26.3

24.1

22.3

43.8

38.0

46.2

39.3

34.9

38.6

39.2

39.9

42.0

34.6

74.0

48.9

46.5

47.2

39.7

35.3

32.6

32.8

31.1

22.6

24.3

31.2

50.2

31.8

27.1

50

,.

Cya

- Zi

nc

.' mde

74

0.7

67

0.7

59

0.7

62

0.7

61

0.8

52

0.8

96 69

1.5

79

1.3

70

1.1

58

1.0

64

0.9

67

0.9

73

0.9

88

0.9

66

0.7

92 84

1.6

85

1.5

67

1.1

58

0.8

54

0.7

69

0.7

63

0.7

50

1.0

44

0.7

31

0.6

40

0.6

54

0.6

46

0.6

20

10

*See

fig

ure

2 fo

r lo

catio

n of s

ites

on S

tand

ley

Lak

e, f

igur

e 3

for

site

s on

Gre

at W

este

rn R

eser

voir

, an

d fi

gure

4 f

or s

ites

on M

ower

Res

ervo

ir.

2Cod

es f

or la

kes

incl

ude:

SL

=Sta

ndle

y L

ake,

GW

=Gre

at W

este

rn R

eser

voir

, and

M=

Mow

er R

eser

voir

.

APPENDIX C

Lake-water samples

APPENDIX C 55

Table C1 . Field measurements at lake-water-sampling sites

[ft, feet; °C, degrees Celsius; mg/L, milligrams per liter; jiS/cm, microsiemens per centimeter at 25 degrees Celsius]

Site _ ._o Samp e . > Reservoir . y number 1 date

SW00992 SL 09/08/92

S WO 1092 SL 09/09/92

SW01192 SL 09/08/92

Sample time

9:02

9:02

9:03

9:04

9:05

9:06

9:07

9:08

9:09

9:10

9:11

9:11

9:12

9:13

9:14

9:15

9:16

9:17

9:52

9:52

9:53

9:54

9:55

9:56

11:00

11:01

11:01

11:02

11:03

11:03

11:04

11:04

11:05

11:06

11:07

11:08

11:09

11:09

Depth (ft)

1

5

10

15

20

25

3035

40

45

50

55

60

65

70

72.5

75

80

1

5

10

15

20

21

1

5

10

15

20

25

30

35

40

45

50

55

60

65

Temperature (°C)

18.1

18.1

18.1

18.1

18.1

18.1

18.1

18.1

18.0

18.0

17.9

17.0

17.3

17.1

17.0

16.4

15.1

14.8

17.7

17.7

17.7

17.6

17.6

17.5

18.4

18.3

18.1

18.0

18.0

18.0

18.0

18.0

17.9

17.9

17.8

17.7

17.7

17.4

Dissolved oxygen (mg/L)

8.2

8.1

8.0

7.9

7.9

7.9

7.8

7.8

7.7

7.3

6.5

5.6

3.1

2.4

1.9

0.4

0.3

0.3

7.2

7.2

7.2

7.1

7.1

7.0

8.0

8.0

7.9

7.9

7.8

7.8

7.6

7.2

6.7

6.0

5.7

5.4

5.1

4.0

pH

8.2

8.1

8.1

8.1

8.1

8.1

8.1

8.1

8.1

8.0

8.0

7.9

7.9

7.8

7.7

7.6

7.5

7.5

8.0

8.0

8.0

8.0

8.0

8.0

7.8

7.8

7.8

7.8

7.8

7.8

7.8

7.8

7.7

7.7

7.6

7.6

7.6

7.6

Specific conductance

(nS/cm)

224

224

224

224

223

224

224

224

223

223

223

224

228

228

229

234

246

249

226

226

226

226

226

226

226

226

228

227

227

227

226

226

227

225

224

224

224

225


Table C1. Field measurements at lake-water-sampling sites-Continued

Sit* , Reservoir* S P|e number date

S WO 1292 SL 09/09/92

SW03192 SL 10/13/92

SW03292 SL 10/14/92

SW03392 SL 10/13/92

SW03492 SL 10/13/92

SW03592 SL 10/14/92

Sample time

11:24

11:24

11:25

11:25

11:26

11:27

11:28

11:29

11:30

11:31

10:14

10:15

10:16

10:19

10:20

9:54

9:54

9:55

9:55

8:56

8:58

9:00

9:01

11:12

11:13

11:14

11:15

11:16

11:17

8:55

8:57

8:58

8:58

8:59

9:00

9:00

9:01

9:02

9:03

9:05

Depth(ft)

15

10

15

20

25

30

35

40

42

1

5

10

15

16

1

5

10

15

1

5

10

13.5

1

5

10

15

20

22.5

1

5

10

15

20

25

30

40

50

60

70

Temperature<°C)

18.3

18.2

18.1

18.0

18.0

17.9

17.9

17.8

17.7

17.7

13.9

13.9

13.7

13.4

13.2

14.4

14.4

14.4

14.3

14.0

14.0

13.9

13.7

14.3

14.2

14.2

14.1

14.1

14.0

14.7

14.7

14.7

14.7

14.7

14.7

14.7

14.7

14.7

14.5

14.5


7.2

7.2

7.1

7.1

7.1

7.1

7.0

7.0

7.0

6.9

8.8

8.6

8.3

7.8

7.7

7.9

7.9

7.9

7.9

8.5

8.4

8.4

8.3

8.7

8.6

8.6

8.4

8.3

7.9

8

7.9

7.9

7.8

7.8

7.8

7.8

7.7

7.5

6.8

6.5

PH

7.9

7.9

7.9

7.9

7.9

7.9

7.9

7.9

7.8

7.9

8.1

8.1

8.1

8.0

8.0

8.3

8.3

8.3

8.3

8.1

8.1

8.2

8.2

8

8

8.1

8.1

8.1

8

8.2

8.2

8.2

8.2

8.2

8.1

8.1

8.1

8.0

7.8

7.7


(nS/cm)

223224224224225225225224224224

229229229229229

226227230232

229229229229

229229229228229228

229231233236236237241240238249244

APPENDIX C 57

Table C1. Field measurements at lake-water-sampling sites-Continued

Site _ .j . i Reservoir number

S WO 1392 GW

S WO 1492 GW

SW01692 GW

S WO 1592 GW

SW01792 GW

SW02192 GW

SW02292 GW

Sample date

08/31/92

09/01/92

09/02/92

09/01/92

09/15/92

10/02/92

10/02/92

Sample time

9:00

9:01

9:02

9:03

11:50

11:51

11:52

11:53

11:54

11:55

11:56

11:57

8:35

8:35

8:36

8:37

8:38

8:39

8:40

8:41

8:42

9:16

9:17

9:18

9:20

9:21

9:17

12:18

12:19

12:20

11:11

11:12

11:13

11:14

11:15

Depth (ft)

15

10

14.5

1

5

10

15

20

25

30

35

1

5

10

15

20

25

30

35

38

1

5

10

15

18

1

1

5

8

1

5

10

15

17

Temperature (°C)

18.5

18.4

18.3

17.5

18.3

18.3

18.3

18.3

18.2

18.2

18.2

18.1

17.8

17.8

17.8

17.8

17.8

17.8

17.7

17.6

17.4

18.0

18.0

18.0

18.0

17.7

18.3

17.0

16.7

16.4

16.2

15.8

15.6

15.5

15.4


7.6

7.5

7.5

7.6

7.6

7.6

7.5

7.5

7.5

7.4

7.4

7.1

7.7

7.7

7.6

7.6

7.5

7.5

7.5

7.5

7.4

7.6

7.6

7.6

7.6

7.4

8.4

8.2

8.2

8.2

8.1

8.1

8.0

8.1

8.2

pH

8.3

8.3

8.3

8.3

8.3

8.3

8.3

8.3

8.2

8.2

8.2

8.1

8.3

8.3

8.3

8.2

8.2

8.2

8.2

8.2

8.1

8.3

8.3

8.3

8.3

8.2

8.3

8.3

8.3

8.3

8.3

8.3

8.2

8.3

8.3


(fj.S/cm)

184

183

184

185

182

183

185

189

190

192

195

197

184

184

185

191

193

194

196

199

204

183

183

183

185

191

187

181

183

187

183

184

189

191

191


Table C1 . Field measurements at lake-water-sampling sites-Continued

Site _ . , . 1 Reservoir2 number 1

SW02392 GW

SW02492 GW

SW01892 M

SW02092 M

SW02692 M

SW02792 M

SW02892 M

SW02992 M

SW03092 M

Sample date

10/02/92

10/02/92

09/14/92

09/14/92

10/08/92

10/08/92

10/08/92

10/08/92

10/08/92

Sample time

8:37

8:39

8:40

8:40

8:41

8:42

8:43

8:45

10:30

10:31

10:05

10:09

10:10

10:11

10:52

10:53

10:55

13:02

12:04

12:05

11:20

11:22

8:56

10:30

10:31

Depth (ft)

1

5

10

15

20

25

30

33

1

2.5

1

3

5

6

1

3

5

0.5

1

3

1

3

1

3

1

1

4

Temperature(°C)

15.6

15.6

15.6

15.6

15.6

15.6

15.5

15.5

16.1

16.1

17.3

16.9

16.6

16.4

17.3

16.9

16.3

22.0

8.4

8.1

9.5

8.7

9.6

9.4

7.7

9.3

9.1


7.8

7.8

7.8

7.7

7.7

7.6

7.5

7.3

7.9

7.9

7

4.8

2.0

0.6

9.7

8.3

2.0

12.5

9.6

8.8

9.6

9.2

8.2

7.6

5.9

7.6

6.6

pH

8.0

8.0

8.0

8.0

8.0

7.9

7.9

7.8

8.2

8.2

10.3

10.1

9.7

9.6

10.4

10.2

9.8

9.9

10.1

10.1

10.2

10.2

10.1

10.1

10.0

10.1

10.1


(nS/cm)

183

185

189

191

194

196

196

198

179

181

276

271

268

270

282

276

269

272

270

271

269

268

268

269

267

268

268

'See figure 2 for location of sites on Standley Lake, figure 3 for sites on Great Western Reservoir, and figure 4 for sites on Mower Reservoir. Codes for lakes include: SL=Standley Lake, GW=Great Western Reservoir, and M=Mower Reservoir.

APPENDIX C 59

Characterization

of

Selected

Radionuclides in

Sediment

and

Surface

Water

in

Standley Lake,

Great

Western

Reservoir,

and

Mower

Reservoir, Jefferson

County, Colorado, 1992

Tabl

e C

2.

Rad

ionu

clid

e co

ncen

tratio

ns in

lak

e-w

ater

sam

ples

[Mea

sure

men

ts a

re in

pic

ocur

ies

per

liter

; ft

, fee

t; --

, m

easu

rem

ent

not

repo

rted

Site

nu

mbe

r1

SW00

992

SW01

092

SW01

192

SW01

292

SW03

192

SW03

192

SW03

292

SW03

292

SW03

392

SW03

392

SW03

492

SW03

492

SW03

592

SW03

592

SW03

592

SW03

592

S WO

13 9

2

S WO

149

2

S WO

159

2

S WO

169

2

SW01

792

SW02

192

SW02

192

SW02

292

SW02

292

SW02

392

SW02

392

SW02

492

SW09

497

Sam

plin

g de

pth

(ft)

From 80

20

65

41 15.5

*

21*

73.5

*

14.5

35

18.5

39 8*

17*

30*

1 7S

To 80

21

65

42 16 17

13.5

22.5 75 14.5

36

19

40 9 19 34

1 S

Res

er

voir2

SL

SL

SL

SL

SL

SL

SL

SL

SL

SL

SL

SL

SL

SL

SL

SL GW

GW

GW

GW

GW

GW

GW

GW

GW

GW

GW

GW

r:

w

Sam

ple

num

ber

SW07

100C

H

SW07

101C

H

SW07

102C

H

SW07

103C

H

SW07

022C

H

SW07

219C

H

SW07

023C

H

SW07

221C

H

SW07

024C

H

SW07

222C

H

SW07

025C

H

SW07

224C

H

SW07

026C

H

SW07

028C

H

SW07

029C

H

SW07

225C

H

SW07

104C

H

SW07

105C

H

SW07

106C

H

SW07

107C

H

SW07

108C

H

SW07

007C

H

SW07

205C

H

SW07

008C

H

SW07

206C

H

SW07

009C

H

SW07

207C

H

SW07

010C

H

swo

77

0sr

H

Sam

ple

date

09-0

8-92

09-0

9-92

09-0

8-92

09-0

9-92

07-2

7-92

10-1

3-92

07-3

0-92

10-1

4-92

07-2

7-92

10-1

3-92

07-2

8-92

10-1

3-92

07-2

8-92

07-2

8-92

07-2

8-92

10

-14-

92

08-3

1-92

09-0

1-92

09-0

1-92

09-0

2-92

09-1

5-92

07-1

5-92

10-0

2-92

07-1

5-92

10-0

2-92

07-1

6-92

10-0

2-92

07-1

6-92

10

-07-

97

; * i

ndic

ates

max

imum

dep

th o

f com

posi

te s

ampl

e;un

cert

aint

ies

are

in p

aren

thes

es;

nr in

dica

tes

unce

rtai

nty

was

not

rep

orte

d]

Dis

solv

ed r

adio

nucl

ides

Am

eric

ium

- 24

1

-0.0

04

0 -0.0

01

0.00

9

0.00

5

0 0.00

7

0.00

4

0.00

6

0.01

3

0.00

3

0.00

7

-0.0

03

-0.0

01

0.00

1

0.00

4

-0.0

01

0.00

6

0.00

1

0.00

2

0.01

8

-0.0

01

0.00

5

-0.0

1

-0.0

08

-0.0

06

-0.0

1

(nr)

-0.0

47

(nr)

-0.0

06

-0.0

05

-0.0

03

-0.0

03

-0.0

04

-0.0

09

-0.0

06

-0.0

1

-0.0

1

-0.0

1

-0.0

07

-0.0

05

(nr)

-0.0

09

(nr)

-0.0

01

Gro

ss a

lpha

0.47

0.84

0.29

-0.5

8

1.08

0.68

0.92

1 1.4

1 0.58

0.86

1.1

-0.4

2

0.43

0.25

-0.0

6

-0.3

9

0.7

0.65

0.35

-0.0

9

0.69

0.39

0.78

088

-2

-2

-2

-2 -0.4

6

-2.1

2

-0.8

5

-0.4

6

-2.2

6

-0.2

9

-0.4

4

-0.4

7

-2.0

8

-2

-2

-2

-2

-2

-0.4

1

-0.5

5

-0.4

1

-0.5

4

-0.5

8

-0.4

1

-0.4

3 -0

.48

Gro

ss b

eta

2.3

2.1

2.3

1.2

2.82

2 2.65

-0.1

4

2.8

4.3

1.4

1.8 1 1.7

0.96

1.6

1.8

1 0.08

1.92

0.81

1.85

0.17

1.66

2.6

709

-2

-2

-2

-2 -1.6

-2.7

4

-1.6

-2.8

-2.8

6

-2.6

-3

-2.6

-2

.9 -2

-2

-2

-2

-2

-3

-1.5

-3

-1.7

-2.9

-1.6

-2.8

-1

.fi

Plut

oniu

m-

239,

240

-0.0

02

0.00

6

0.00

1

0.00

2

0.00

1

0 0

0.00

9

0.00

2

0

0.00

1

0

-0.0

02

0.00

2

-0.0

01

0 --

-0.0

03

0.00

1

-0.0

1

-0.0

1

-0.0

1

-0.0

1

(nr)

-0.0

03

(nr)

-0.0

09

-0.0

02

-0.0

11

-0.0

04

-0.0

07

-0.0

2

-0.0

07

-0.0

1

-0.0

07

--

-0.0

15

-0.0

02

Ura

nium

- 23

3,23

4

0.43

0.63

0.5

0.65

0.67

0.87

0.84

1.2 1

0.76

0.86

0.43

0.5

0.47

0.56

0.53

0.38

0.29

0.44

0.51

-0.2

-0.2

-0.3

-0

.1

(nr)

-0.2

6

(nr)

-0.2

-0.1

5

-0.0

9

-0.1

3

-0.3

-0.3

-0.3

-0.2

-0.3

-0.0

3

-0.0

4

-0.0

4

-0.1

1

Ura

nium

- 23

5

0.03

0.03

0.66

0.04 0 0 0

0.71

0.2

0.04

0.02

0.31

0

-0.0

8

0.07

0.51

0.04

-0.0

1

-0.0

1

-0.0

1

-0.2

-0.2

-0.2

-0

.2

(nr)

-0.2

(nr)

-0.0

7

-0.1

3

-0.0

4

-0.1

3

-0.2

-0.3

-0.4

-0.3

-0.2

-0.0

3

-0.0

6

-0.0

7

-0.1

1

Ura

nium

- 23

8

0.35

0.42

-0.0

4

0.51

0.34 0

0.43

0.47

0.63

0.73

0.67 0

0.29

0.23

0.21

-0.0

5

0.48

0.46

-0.5

8

0.25

-0.2

-0.2

-0.2

-0

.1

-0.1

5

-0.2

6

-0.1

2

-0.0

7

-0.1

2

-0.0

4

-0.1

2

-0.2

-0.3

-0.3

-0.2

-0.2

-0.0

5

-0.0

4

-0.0

7

-0.1

1

Tota

l ra

dion

uclid

es

Am

eric

ium

- 24

1

0.00

2

0.00

1

-0.0

01

0

0.00

5

0.01

3

0.01

1

0.02

6

0.00

5

0.00

4

0.00

6

0.00

9

0.00

2

0.00

4

0.01

2

-0.0

05

0.00

2

0.01

0.01

1

0.00

3

0.00

7

-0.0

02

0.01

7

0.00

7

0.00

9 0

004

-0.0

05

-0.0

1

-0.0

06

-0.0

1

-0.0

06

(nr)

-0.0

04

-0.0

38

-0.0

02

(nr)

-0.0

02

-0.0

08

-0.0

04

-0.0

06

-0.0

06

-0.0

2

-0.0

1

-0.0

04

-0.0

1

-0.0

09

-0.0

04

-0.0

04

(nr)

(nr)

-0.0

02rn

r^

Tabl

e C

2.

Rad

ionu

clid

e co

ncen

trat

ions

in l

ake-

wat

er s

ampl

es-C

ontin

ued

Sam

plin

gSi

te

deP

* R

eser

- nu

mbe

r1

(ft)

volt2

APPENDIX

C o>

From

To

SW01

892

1 6

SW01

992

4.5

5

SW02

092

1 1

SW02

692

SW02

692

SW02

792

SW02

792

2 4

SW02

892

SW02

892

2 4

SW02

992

SW02

992

1 1

SW03

092

SW03

092

2 4

Sam

plin

gSi

te

^P

*

num

ber1

(ft

)Fr

om

ToSW

0099

2 80

80

SW01

092

20

21

SW01

192

65

65

S W

O 1

292

41

42

SW03

192

SW03

192

--

16

SW03

292

SW03

292

15.5

* 17

SW03

392

SW03

392

- -

13.5

SW03

492

SW03

492

21*

22.5

SW03

592

SW03

592

SW03

592

SW03

592

73.5

* 75

M

M

M M M M M

M

M M M

M

M

Sam

ple

Sam

ple

num

ber

date

SW07

109C

H

09-1

4-92

SW07

110C

H

09-1

4-92

SW07

111C

H

09-1

4-92

SW07

012C

H

07-2

0-92

SW07

210C

H

10-0

8-92

SW07

013C

H

07-2

0-92

SW07

214C

H

10-0

8-92

SW07

014C

H

07-2

0-92

SW07

216C

H

10-0

8-92

SW07

015C

H

07-2

0-92

SW07

217C

H

10-0

8-92

SW07

016C

H

07-2

1-92

SW07

218C

H

10-0

8-92

Res

er-

Sam

ple

Sam

ple

voir2

nu

mbe

r da

te

SL SL SL SL SL SL SL SL SL SL

SL

SL

SL

SL SL SL

SW07

100C

H

09-0

8-92

SW07

101C

H

09-0

9-92

SW07

102C

H

09-0

8-92

SW07

103C

H

09-0

9-92

SW07

022C

H

07-2

7-92

SW07

219C

H

10-1

3-92

SW07

023C

H

07-3

0-92

SW07

221C

H

10-1

4-92

SW07

024C

H

07-2

7-92

SW07

222C

H

10-1

3-92

SW07

025C

H

07-2

8-92

SW07

224C

H

10-1

3-92

SW07

026C

H

07-2

8-92

SW07

028C

H

07-2

8-92

SW07

029C

H

07-2

8-92

SW07

225C

H

10-1

4-92

Dis

solv

ed r

adio

nucl

ides

Am

erlc

lum

- _

. .

_ ,.

_ G

ross

alp

ha

Gro

ss b

eta

0.01

3 -0

.01

0.11

-2

1.

4

-0.0

01

-0.0

1 -0

.13

-2

0.7

0.00

2 -0

.01

0.95

-2

1.

2

0.00

5 -0

.003

0.00

4 -0

.003

0.00

8 -0

.005

0.00

5 -0

.007

0.00

1 -0

.002

-0.0

19

-0.1

72

0.01

7 -0

.02

0.11

6 -0

.158

0.00

2 -0

.013

0.47

-0

.45

0.46

0.14

-2

.6

1.7

0.4

-0.4

6 -0

.02

0.07

-2

.3

-0.0

6

0.57

-0

.42

-0.2

5

0.87

-1

.9

0.87

0.24

-0

.46

0.26

0.36

-2

.7

2.1

1.9

-2.3

0.

78

-2

-2

-1 -2.4

-2.8

-2.5

-2.7

7

-2.7

-2.8

5-2

.4

-2.8

1

-2.9

4

Plu

toni

um-

Ura

nium

- 23

9,24

0 23

3,23

4

0 -0

.009

0.

17

0.00

2 -0

.009

-0.0

01

-0.0

1 0.

18

0.00

3 -0

.002

0.

32

0.00

2 -0

.003

0.

2

0.28

0.00

1 -0

.003

0.

58

-0.0

01

-0.0

1

0.00

1 -0

.009

0.

21

0.47

0 -0

.01

0.39

0 -0

.005

0.

7

-0.1

-0.2

-0.0

9-0

.5

-0.0

3

-0.3

1

-0.2

3

-0.0

4

-0.3

3

-3.1

5

Ura

nium

- 23

5

0.02

-0

.2

0.11

-0

.2

-0.0

1 -0

.09

-0.2

-0

.46

0.04

-0

.03

-0.0

1 -0

.19

0.14

-0

.23

0 -0

.04

0.1

-0.2

8

0 -2

.53

Ura

nium

- 23

8

0.17

-0

.1

0.2

-0.1

0.33

-0

.06

-0.2

6 -0

.52

0.24

-0

.06

0.11

-0

.25

0.12

-0

.26

0.42

-0

.04

0.1

-0.2

8

-0.0

8 -2

.89

Tota

l ra

dion

uclid

es

Am

eric

ium

- 24

1

0.00

2 -0

.01

0 -0

.009

0 -0

.01

.-

-0.0

1 -0

.01

-0.0

04

0.00

3 -0

.008

0.00

7 -0

.004

0.01

3 -0

.007

0.00

3 -0

.006

0.00

8 -0

.003

0.00

5 -0

.001

0.01

7 -0

.017

Tota

l rad

ionu

clid

es

Gro

ss a

lpha

0.44

-2

0.45

-2

0.91

-1

1.2

-2

-1.5

7 -0

.69

0.62

-0

.68

1.9

-0.3

2

1.5

-1.9

3

1.4

-0.5

3

1.57

-0

.69

1.4

-0.5

0.77

-2

.43

0.74

-2

.31

Gro

ss b

eta

2.7

-2

4.3

-2

2.7

-2

2.9

-2

-1.3

0 -2

.40

2.49

-1

.6

2.1

-2.5

2.1

-2.8

6

2.5

-2.6

-3.3

4 -1

.60

1.2

-2.7

0.87

-2

.77

-0.0

1 -3

1.3

-2.6

2 -2

.4

3.7

-2.6

9

Plu

toni

um-

_ ...

23

9,24

0 Tn

tlUm

0

0.00

4--

0.00

5

0.00

2

0.00

2

0.00

4

0.00

1

0

-0.0

01

0.00

2

0.00

9

0

0.00

3

0.00

3

0.00

2

-0.0

1

-0.0

1..

-0.0

1

-0.0

09

(nr)

-0.0

02

-0.0

04

-0.0

05

(nr)

-0.0

04

-0.0

09

.0.0

04

-0.0

01

-0.0

04

-0.0

08

Ura

nium

- ..

. _

_ 23

3,23

4 U

'an,

um-2

35

0.82

0.39

0.59

0.68

0.68

0.55 0.7

0.68

0.95

-0.9

7

0.52

1.2

1.3

0.61

0.52 1.3

-0.3

-0.2

-0.2

-0.2

-0.0

4

-0.1

1

-0.0

3

-0.2

6

-0.1

6

0.09

-0

.30

0.13

-0

.3

0.02

-0

.2

0.06

-0

.2

0.04

-0

.07

0.03

-0

.15

0.08

-0

.03

0.08

-0

.21

0.14

-0

.14

-0.1

3 -0

.00

(nr)

-0.1

8 0

-0.0

4

-0.2

0.

27

-0.1

2

-0.0

3 0.

04

-0.0

3

-0.1

8 -0

.02

-0.1

4

-0.3

4

-0.1

4

0 -0

.1

0.01

-0

.12

Ura

nium

-238

-0.3

7 -0

.30

0.45

-0

.2

0.39

-0

.1

0.73

-0

.2

0.77

-0

.07

0.44

-0

.15

0.85

-0

.05

0.54

-0

.24

0.62

-0

.16

-0.6

7 (n

r)

1.1

-0.0

7

0.89

-0

.20

1.1

0.06

0.29

-0

.15

0.52

0.

34

1 0.

12

at

10Ta

ble

C-2

. R

adio

nucl

ide

conc

entra

tions

in s

urfa

ce w

ater

sam

ples

-Con

tinue

d

» o a? ss s» 3 2. fl 1* ""*

2.

l| i 3 &

o S5

§ g

s

0

wO

3

3 co

o" S

.- 3

(O

CD

(O 3 Dl i. c !" O &

* 5' CO ET

ft C JF 0 1 f i 3D

Sam

plin

gSi

te

*?*

Res

er-

num

ber1

(ft

> vo

ir2

From

SW01

392

14.5

SW01

492

35

SW01

592

18.5

SW01

692

39

SW01

792

SW02

192

SW02

192

8*

SW02

292

SW02

292

17*

SW02

392

SW02

392

30*

SW02

492

SW02

492

1.75

SW01

892

1

S WO

199

2 4.

5

SW02

092

1

SW02

692

SW02

692

SW02

792

SW02

792

2

SW02

892

SW02

892

2

SW02

992

SW02

992

1

SW03

092

SW03

092

2

To 14.5

36 19 40 -- -- 9 -- 19 .. 34 3.5 6 5 1 -- -- . _ 4 -- 4 -- 1 -- 4

GW

GW

GW

GW

GW

GW

GW

GW

GW

GW

GW

GW

GW M M M M M M M M M M M M M

Sam

ple

Sam

ple

num

ber

date

SW07

104C

H

08-3

1-92

SW07

105C

H

09-0

1-92

SW07

106C

H

09-0

1-92

SW07

107C

H

09-0

2-92

SW07

108C

H

09-1

5-92

SW07

007C

H

07-1

5-92

SW07

205C

H

10-0

2-92

SW07

008C

H

07-1

5-92

SW07

206C

H

10-0

2-92

SW07

009C

H

07-1

6-92

SW07

207C

H

10-0

2-92

SW07

010C

H

07-1

6-92

SW07

208C

H

10-0

2-92

SW07

109C

H

09-1

4-92

SW07

110C

H

09-1

4-92

SW07

111C

H

09-1

4-92

SW07

012C

H

07-2

0-92

SW07

210C

H

10-0

8-92

SW07

013C

H

07-2

0-92

SW07

214C

H

10-0

8-92

SW07

014C

H

07-2

0-92

SW07

216C

H

10-0

8-92

SW07

015C

H

07-2

0-92

SW07

217C

H

10-0

8-92

SW07

016C

H

07-2

1-92

SW07

218C

H

10-0

8-92

Tota

l rad

ionu

clid

es

Gro

ss a

lpha

0.07 1.8

0.83

-2

1.7

-2

0.67

-2

1.6

-0.5

7

0.87

-0

.66

2.2

-0.4

5

0.25

-0

.41

. _

0.48

-0

.45

. _

_ _

0.42

-0

.48

0.95

-2

-0.2

5 -2

-0.0

4 -2

0.35

-2

.52

0.85

-0

.45

0.71

-2

.09

-- 0.12

-1

.97

0.41

-0

.43

0.63

-2

.5

1.2

-0.4

8

0.79

-2

.49

Gro

ss b

eta

nJ^\^

~

Triti

umU

rani

um-

.. .

___

Ura

nium

-235

Ura

nium

-238

239,

240

zdd,

zd<

t

2.4

3.3

3.4

3.3

1.56 4.4

2.41 2

2.05

0.27

4.24 1.3

0.34 1.3

-1.3 1.7

0.59 3 -2.1 1.4

-0.3

3

0.77 1.5

2.5

-2

2.6

-2

-2

4.7

-2.2 -2

0.

003

-0.0

08

-1

0.00

4 -0

.007

-2.2

0.

004

-0.0

01

-1.7

--

--

-2

8.1

-530

-2.5

0.

003

-0.0

01

-1.5

--

--

14

4.3

-540

-2.4

0.

005

-0.0

02

-1.6

--

--

-2

9.1

-540

-2.7

0.

005

-0.0

03

-1.6

--

--

25

.2

-540

.2 -2

0.00

4 -0

.01

-2

0.00

5 -0

.02

-2.9

0.

001

-0.0

06

-2.9

0.

03

-0.0

16

-2.4

-0

.005

-0

.016

-2.8

9 0.

006

-0.0

03

-2.9

0.

004

-0.0

04

-2.7

8 0.

001

-0.0

04

-3

-0.0

02

-0.0

08

-2.9

1 0

-0.0

1

-2.5

0.

001

-0.0

01

-2.7

2 0.

017

-0.0

12

0.5

0.51

0.44

0.91 -- 0.75 -- 0.53 -- 1.1

0.2

0.08

0.19

0.08

0.56

0.68

0.24

0.82

0.46

0.36

0.25

0.49

0.63

0.00

2

0 -0.2

0.

11

-0.3

0.

41

-0.3

0

-0.0

5 0.

16-.

-0.1

5 0.

17

-0.1

3 -0

.02

--

-0.1

6 0.

04

-0.2

-0

.03

-0.2

0

-0.2

0.

03

-0.3

6 0.

08

-0.3

9 -0

.03

-0.0

4 0.

1

-0.2

7 -0

.01

-0.0

8 0.

09

-0.2

1 0.

08

-0.0

5 -0

.02

-0.2

7 0.

15

-0.0

5 -0

.01

-0.3

-0

.01

-0.0

2

-0.0

08-0

.3

-0.2

-0.2

-0.0

5--

-0.0

8

-0.2 -- -0.1

2

-0.3

-0.2

-0.2

-0.3

6

-0.3

5

-0.0

4

-0.2

7

-0.0

8

-0.2

1

-0.1

6-0

.2

-0.0

5

-0.2

6

--0.

44

-0.2

-0.0

2 0.

20

0.37

0.

20

0.43

0.

05.. 0.36

-0

.05

0.25

-0

.2-- 0.68

0.

14

0.09

-0

.2

0.16

-0

.2

0.14

0.

20

0.22

0.

36

0.65

-0

.4

0.39

-0

.04

0.5

0.23

0.17

-0

.13

0.29

0.

26

0.36

0.

05

0.13

0.

24.. 0.32

0.

27

'See

fig

ure

2 fo

r lo

catio

n of

site

s on

Sta

ndle

y L

ake,

fig

ure

3 fo

r si

tes

on G

reat

Wes

tern

Res

ervo

ir,

and

figu

re 4

for

site

s on

Mow

er R

eser

voir

.2C

odes

for

lake

s in

clud

e:SL

=Sta

ndle

y L

ake,

GW

=Gre

at W

este

rn R

eser

voir

, an

d M

=M

ower

Res

ervo

ir.

Tabl

e C

3.

Che

mic

al c

once

ntra

tions

in l

ake-

wat

er s

ampl

es

[Unl

ess

othe

rwis

e sh

own,

mea

sure

men

ts a

re in

mic

rogr

ams

per

liter

; ft,

fee

t; m

g/L,

mill

igra

ms

per

liter

; --,

not

rep

orte

d; *

, in

dica

tes

max

imum

dep

th o

f co

mpo

site

sam

ple]

Site

nu

mbe

r1

Sam

plin

g de

pth3

(ft

)

Tota

l de

pth

(ft)

Res

er

voir

2Sa

mpl

e nu

mbe

rSa

mpl

e da

teA

lum

in

umA

nti

mon

yA

rse

ni

cB

ar

ium

Ber

yl

lium

Cad

m

ium

Ces

iu

m

Chr

o

mi

um

Co

ba

ltC

op

per

iron

Lead

Lith

iu

m

Man

ga

ne

se

Mer

cu

ry

Dis

solv

ed

APPENDI

X O en CO

SW00

992

SW01

092

S WO

11 9

2

SW01

292

SW03

192

SW03

192

SW03

292

SW03

292

SW03

392

SW03

392

SW03

492

SW03

492

SW03

592

SW03

592

SW03

592

SW03

592

SW01

392

SW01

492

SW01

592

SW01

692

SW01

792

SW02

192

SW02

192

SW02

292

SW02

292

SW02

392

SW02

392

SW02

492

SW02

492

SW01

892

SW01

992

SW02

092

SW02

692

80.0

20.0

65.0

41.0 -- -- 15.5

*-- -- --

21.0

*--

73.5

*-- -- -- 14

.5

35.0

18.5

39.0 -- 8.

0* -- 17.0

*--

30.0

*

1.8

1.0

4.5 1.0

80.0

21.0

65.0

42.0 -- 16.0

17.0 -- -- 13.5

22.5 -- 75.0 -- -- -- 14.5

36.0

19.0

40.0 -- 9.0 -- 19.0 -- 34.0

3.5

6.0

5.0

1.0


GW

GW

GW

GW

GW

GW

GW

GW

GW

GW

GW

G

W M M M

M

SW07

100C

H

SW07

101C

H

SW07

102C

H

SW07

103C

H

SW07

022C

H

SW07

219C

H

SW07

221C

H

SW07

023C

H

SW07

024C

H

SW07

222C

H

SW07

224C

H

SW07

025C

H

SW07

225C

H

SW07

026C

H

SW07

028C

H

SW07

029C

H

SW07

104C

H

SW07

105C

H

SW07

106C

H

SW07

107C

H

SW07

108C

H

SW07

205C

H

SW07

007C

H

SW07

206C

H

SW07

008C

H

SW07

207C

H

SW07

009C

H

SW07

208C

H

SW07

010C

H

SW07

109C

HSW

0711

0CH

SW07

111C

H

SW07

012C

H

09-0

8-92

09-0

9-92

09-0

8-92

09-0

9-92

07-2

7-92

10-1

3-92

10-1

4-92

07-3

0-92

07-2

7-92

10-1

3-92

10-1

3-92

07-2

8-92

10-1

4-92

07-2

8-92

07-2

8-92

07-2

8-92

08-3

1-92

09-0

1-92

09-0

1-92

09-0

2-92

09-1

5-92

10-0

2-92

07-1

5-92

10-0

2-92

07-1

5-92

10-0

2-92

07-1

6-92

10-0

2-92

07

-16-

92

09-1

4-92

09-1

4-92

09-1

4-92

07

-20-

92

14.7

20.2

45.0 -- 17.3

19.2

31.6

431.

0

30.4

25.2

16.4

26.7

14.7

17.3

28.2

23.1

30.4

2,25

0.0

3,23

0.0

14.7

15.8

19.9

17.3

14.7

17.3

15.2

78.4

20.2

50

.0

20.2

14.7

18.5

47

.8

14.8

14.8

14.8

14.8

16.5

14.8

14.8

16.5

16.5

14.8

14.8

16.5

14.8

16.5

16.5

16.5

16.5

14.8

14.8

14.8

14.8

14.8

16.5

14.8

16.5

14.8

16.5

14.8

16.5

14.8

14.8

14.8

16

.5

3.2

3.2

3.2

3.2

2.9

1.9

1.9

2.9

2.2

1.9

1.9

2.6

1.9

2.6

2.6

2.6

2.9 1.9

1.9

1.9

1.9

2.9

2.4

2.9

2.4

2.9

2.4

2.9

2.4

3.6

3.5

4.0

4.1

37.6

35.9

37.4

33.2

33.3

36.8

36.0

37.2

32.5

36.2

35.8

33.8

36.3

33.3

35.3

36.9

33.2

45.7

48.9

32.9

37.5

40.8

33.3

39.2

32.5

39.7

37.6

40.0

33.5

29.6

28.1

31.4

24

.3

0.3

0.3

0.3

0.3

0.4

0.3

0.3

0.4

0.4

0.3

0.3

0.4

0.3

0.4

0.4

0.4

0.4

0.3

0.3

0.3

0.3

0.3

0.4

0.3

0.4

0.3

0.4

0.3

0.4

0.3

0.3

0.3

0.4

1.5

1.5

1.5

1.5

1.4

1.5

1.5

1.4

1.4

1.5

1.5

1.4

1.5

1.4

2.5

1.4

1.4

1.5

1.5

1.5

1.5

1.5

1.4

1.5

1.4

1.5

1.4

1.5

1.4

1.5 1.5

1.5

1.4

50 50 50 50 80 50 50 50 60 50 50 50 60 50 50 50 50 50 60 50 50 50 50 50 50 50 50

50

50 50 50 50"

80

2.6

2.6

2.6

2.6

3.7

3.8

2.6

3.7

3.7

2.6

2.6

3.7

2.6

3.7

3.7

3.7

3.7

2.6

2.6

2.6

2.6

2.6

3.7

2.6

3.7

2.6

3.7

2.6

3.7

2.6

2.6

2.6

3.7

1.3

1.3

1.3

1.3

2.3 1.3

1.3

2.3

2.3

1.3

1.3

2.3

1.3

2.3

2.3

2.3

2.3 1.3

1.9

1.3

1.3

1.3

2.3

1.3

2.3

1.3

2.3

1.3

2.3 1.3

1.3

1.8

2.3

1.9

1.9

2.2

1.9

2.6

2.0

1.9

2.4

2.4

1.9

1.9

2.4

1.9

2.4

2.4

2.4

6.4

7.4

9.4 1.9

2.8

1.9

2.4 1.9

2.4

1.9

3.2

1.9

3.5

3.6

2.1

4.5

2.4

-- -- 20.3 -- 16.3

39.5

24.5

28.6

16.3

12.1

28.6

27.0

11.0

16.3

37.3

40.3

43.0

141.

0

199.

04.

0 -- 28.1

16.3

23.5

16.3

6.6

73.2

17.8

47.8

13.5

15.2

9.3

60.2

2.0

2.0

2.0

2.0

3.5

2.3

2.0

2.1 1.0

2.0

2.5

3.9

2.5

2.2

8.0

2.2

2.2

1.5

1.6

1.2

1.9

3.8

4.7

3.4

5.8

2.8

2.8

3.5

3.6

2.9

2.3

3.8

2.7

8.1

8.4

6.3

7.1

7.1

8.2

9.0

6.4

7.5

8.1

7.8

6.5

7.0

6.7

8.8

6.8

5.9

3.9

6.6

5.4

8.2

6.8

3.7

6.2

3.8

6.7

4.4

6.7

5.1

10.6

10.6

7.4

6.5

1570

.0

2.6

68.4

8.3

2.4

0.9

0.9

26.5

6.0

0.9

0.9 1.6

13.3

1.8

2.3

372.

0

2.2

79.0

94.2

1.8

0.9

1.8

2.3 1.2

2.4

3.0

5.0

1.8

2.8

6.4

5.7

3.0

7.3

0.2

0.2

0.2

0.2

0.2

0.1

0.1

0.2

0.2

0.1

0.1

0.2

0.1

0.2

0.2

0.2

0.2

0.2

0.2

0.2

0.2

0.1

0.2

0.1

0.2

0.1

0.2

0.1

0.2

0.2

0.2

0.2

0.2

Tabl

e C

3.

Che

mic

al c

once

ntra

tions

in l

ake-

wat

er s

ampl

es-C

ontin

ued

Characte

and

Mow

rization

o er Reserv o

^--J

Pfri

f3:

"m

(D

a

w _

O

313

»

?|

1

0

o u

o

wo

5'

p a

<o <

o<O

3

10 ~ D) 3 a CO c 3. D) O (D

U to 5' u 3 a to 1 JO O to D) 5 (D 5f 3 3J

0) w (D O

Site

nu

mbe

r1(f

t)de

pth

"vol

r*

(ft)

V Ir

Sam

ple

Sam

ple

num

ber

date

Alu

m

inum

Ant

i m

ony

Ars

e

nic

Bar

- B

eryl

- C

ad-

ium

M

um

miu

mC

es

ium

Chr

o

mi

um

Co

balt

Cop

- .

. .

Lith

- K

Iron

Le

ad

. pe

r m

m

Man

ga

ne

se

Mer

cu

ry

Dis

solv

ed-C

onti

nued

SW02

692

SW02

792

SW02

792

SW02

892

SW02

892

SW02

992

SW02

992

SW03

092

SW03

092

2.0

2.0 1.0 -- 2.0

4.0

4.0

1.0 -- 4.0 _ .

M M M M M M M M M

SW07

210C

H

10-0

8-92

SW07

214C

H

10-0

8-92

SW07

013C

H

07-2

0-92

SW07

216C

H

10-0

8-92

SW07

014C

H

07-2

0-92

SW07

217C

H

10-0

8-92

SW07

015C

H

07-2

0-92

SW07

218C

H

10-0

8-92

SW07

016C

H

07-2

1-92

Det

ectio

n lim

its

Site

nu

mbe

r1

Sam

plin

g de

pth3

/£*

\(f

t)

Tota

l de

pth

/£*

\(f

t)

Res

er

voir

2Sa

mpl

e Sa

mpl

e nu

mbe

r da

te

14.7

14.7

17.3

14.7

47.1

14.7

17.5

14.7

17.3

200

Mol

yb

denu

m

14.8

14.8

16.5

14.8

16.5

14.8

16.5

14.8

16.5

60 Nic

kel

5.5

4.3

5.1

2.9

3.6

3.7

2.9

6.3

4.3

10 Sele

n

ium

25.6

23.7

20.9

23.0

23.1

24.2

20.3

25.2

21.6

200 Si

l ve

r

0.3

0.3

0.4

0.3

0.4

0.3

0.4

0.3

0.4

5 Stro

n

tium

1.5

1.5

1.4

1.5

1.4

1.5

1.4

1.5

1.8

5 Thal

liu

m

50 50 70 50 50 50 50 50 50

1,00

0

Tin

2.6

2.6

3.7

2.6

3.7

2.6

3.7

3.4

3.7

10 Van

a

dium

1.3

1.3

2.3

1.3

2.3 1.3

2.3

1.3

2.3

50 Zinc

1.9

23.8

2.

1

1.9

7.0

5.6

58.0

3.

4

2.7

25.4

7.

3

2.4

62.3

4.

7

1.9

30.9

1.

9

2.4

44.1

4.

6

2.7

40.2

2.

9

9.7

8.7

7.9

7.8'

7.2

7.8

8.1

8.0

2.4

71.1

11

.4

6.6

25

100

3

_ .

Mag

-<?

al'

ne-

cium

sium

100

Pota

s

sium

5.4

2.7

4.5

2.7

7.9

3.4

5.9

3.8

4.4 15

Sili

co

n

0.1

0.1

0.2

0.1

0.2

0.1

0.2

0.1

0.2

0.2

Sod

iu

m

Dis

solv

ed-C

ontin

ued

SW00

992

SW01

092

S WO

11 9

2

SW01

292

SW03

192

SW03

192

SW03

292

SW03

292

SW03

392

SW03

392

SW03

492

SW03

492

SW03

592

SW03

592

SW03

592

SW03

592

80.0

20.0

65.0

41.0 -- 15.5

*

21.0

*--

73.5

*-- -- --

80.0

21.0

65.0

42.0

16.0

17.0

13.5

22.5 -- 75.0 -- -- --

SL SL SL SL SL SL SL SL SL SL SL SL SL SL SL SL

SW07

100C

H

09-0

8-92

SW07

101C

H

09-0

9-92

SW07

102C

H

09-0

8-92

SW07

103C

H

09-0

9-92

SW07

022C

H

07-2

7-92

SW07

219C

H

10-1

3-92

SW07

221C

H

10-1

4-92

SW07

023C

H

07-3

0-92

SW07

024C

H

07-2

7-92

SW07

222C

H

10-1

3-92

SW07

224C

H

10-1

3-92

SW07

025C

H

07-2

8-92

SW07

225C

H

10-1

4-92

SW07

026C

H

07-2

8-92

SW07

028C

H

07-2

8-92

SW07

029C

H

07-2

8-92

6.7

4.3

4.8

4.0

3.7

8.8

6.1

2.7

5.5

4.4

4.9

4.9

4.3

4.2

6.6

6.2

3 3 3 3 6 3 3 6 6 3 3 6 3 6 6 6

3.9

3.9

3.9

3.9

3.8

3.0

2.9

3.8

2.8

2.9

2.9

3.7

2.9

3.7

3.7

3.7

-- -- -- 2.3

3.6

3.6

2.3

2.3

3.6

3.6

2.3

3.6

2.3

2.3

2.3

171

161

164

153

156

162

159

157

152

163

162

155

162

157

158

179

1.3

1.3

1.3

1.3

0.9

1.3

1.3

1.3

0.9

1.3

1.3

1.6

1.3

1.6

1.6

1.6

_ 6.2

13.7

6.2

12.5

12.2

11.7

12.5

12.5

9.7

6.3

12.5

6.2

12.5

12.5

12.5

2.5

2.5

2.5

2.5

3.3

2.5

2.5

3.3

3.3

2.5

2.5

3.3

2.5

3.3

3.3

3.3

9.3

5.7

14.6

7.0

10.1

12.2

10.8

12.8

10.1

9.4

16.1

10.1

13.4

10.1

19.5

10.1

24,4

00

5,65

0

22,9

00

5,30

0

23,3

00

5,43

0

21,9

00

5,08

0

23,2

00

5,30

0

23,0

00

5,36

0

22,7

00

5,27

0

23,2

00

5,27

0

22,7

00

5,18

0

23,2

00

5,42

0

23,1

00

5,38

0

23,3

00

5,27

0

23,2

00

5,39

0

23,6

00

5,33

0

23,9

00

5,39

0

26,9

00

6,11

0

1,88

0

1,82

0

1,89

0

1,71

0

1,84

0

1,89

0

1,87

0

1,87

0

1,78

0

1,89

0

1,90

0

1,80

0

1,89

0

1,79

0

1,83

0

2,05

0

2,44

0

1,47

0

1,69

0

1,55

0

1,57

0

920

870

1,27

0

1,32

0

865

935

1,28

0

968

1,25

0

1,50

01,

740

12,3

00

11,8

00

12,0

00

11,2

00

11,8

00

11,9

00

11,7

00

11,8

00

11,4

00

12,1

00

12,0

00

11,5

00

12,0

00

11,7

00

11,8

00

13,4

00

Tabl

e C

3.

Che

mic

al c

once

ntra

tions

in la

ke-w

ater

sam

ples

-Con

tinue

d

Site

Sa

mP'

ln9

Sl!f

!

dept

h3

num

ber1

,r

. (f

t)

Tot

al

dept

h (f

t)

Res

er

voir

2Sa

mpl

e nu

mbe

rSa

mpl

e da

teM

olyb

de

num

Nic

kel

Sele

n

ium

Sil

ver

Stro

n

tium

Tha

l

lium

Tin

Van

a

dium

Zinc

Cal

ci

um

Mag

ne

si

um

Pot

as

sium

Sili

co

nSo

d

ium

Dis

solv

ed-C

onti

nued

SW01

392

SW01

492

SW01

592

SW01

692

SW01

792

SW02

192

SW02

192

SW02

292

SW02

292

SW02

392

SW02

392

SW02

492

SW02

492

SW01

892

SW01

992

SW02

092

SW02

692

SW02

692

SW02

792

SW02

792

SW02

892

SW02

892

SW02

992

SW02

992

SW03

092

SW03

092

14.5

35.0

18.5

39.0 -- 8.

0* -- 17.0

*--

30.0

*-- 1.

8 -- 1.0

4.5 1.0 -- -- 2.0 -- 2.0 -- 1.0 -- 2.0 --

14.5

36.0

19.0

40.0 -- 9.0

-- 19.0 -- 34.0 -- 3.5 -- 6.0

5.0

1.0

-- -- 4.0 -- 4.0 -- 1.0

-- 4.0 --

GW

GW

GW

GW

GW

GW

GW

GW

GW

GW

GW

GW


SW07

104C

H

SW07

105C

H

SW07

106C

H

SW07

107C

H

SW07

108C

H

SW07

205C

H

SW07

007C

HSW

0720

6CH

SW07

008C

H

SW07

207C

H

SW07

009C

H

SW07

208C

H

SW07

010C

H

SW07

109C

H

SW07

110C

H

SW07

111C

H

SW07

012C

H

SW07

210C

H

SW07

214C

H

SW07

013C

H

SW07

216C

HSW

0701

4CH

SW07

217C

H

SW07

015C

H

SW07

218C

H

SW07

016C

H

08-3

1-92

09-0

1-92

09-0

1-92

09-0

2-92

09-1

5-92

10-0

2-92

07-1

5-92

10-0

2-92

07-1

5-92

10-0

2-92

07-1

6-92

10-0

2-92

07-1

6-92

09-1

4-92

09-1

4-92

09-1

4-92

07-2

0-92

10-0

8-92

10-0

8-92

07-2

0-92

10-0

8-92

07-2

0-92

10-0

8-92

07-2

0-92

10-0

8-92

07-2

1-92

Det

ectio

n lim

its

APPENDI

X o

4.3

3.7

2.0

3.1

4.8

6.9

4.4

6.0

3.2

6.4

5.0

6.0

3.3 1.7

1.7

1.7

2.7

3.1 1.7

2.7

1.7

2.7

1.7

2.7

2.7

2.7

200

6 3 3 3 3 3 6 3 6 3 6 4 6 3 3 7 6 3 3 6 3 6 3 6 3 6 40

3.8

2.9

2.9

2.9

2.9

3.8

3.6

3.8

3.6

3.8

3.1

3.8

3.1

2.9

2.9

2.9

3.1

3.0

2.9

3.1

2.9

3.1

2.9

3.1

3.8

3.1 5

2.5

3.6

3.6

3.6

3.6

3.6

2.6

3.6

2.5

3.6

2.3

3.6

2.7

3.6

3.6

3.6

2.3

3.6

3.6

2.3

3.6

2.3

3.6

2.3

3.6

2.3 10

122

133

137

126

135

147

126

142

125

144

129

145

115

136

135

137

123

126

123

117

121

122

125

115

126

114

200

1.7

3.8

3.8

3.8

3.8

3.8

4.3

3.8

4.3

3.8

4.3

3.8

4.3

3.8

3.8

3.8

0.9

1.7

1.7

0.9

1.7

0.9

1.7

0.9

3.8

4.5 10

12.5

6.2

6.2

6.2

6.2

6.2

12.5

6.2

12.5

6.2

12.5

6.2

12.5

8.1

6.2

6.2

12.5

6.2

6.2

12.5

6.2

12.5

6.2

12.5

6.2

12.5

200

3.3

2.5

3.4

2.5

2.5

2.5

3.3

2.5

3.3

2.5

3.3

2.5

3.3

3.5

3.5

6.1

3.3

2.9

5.2

3.3

3.9

3.3

2.5

3.3

2.5

3.3 50

10.1

19.6

25.7

5.8

5.7

11.8

10.1

5.7

10.1

5.7

11.1

6.1

10.1

6.9

143.

0

10.8

10.1

5.7

5.7

10.8

5.7

22.5

5.7

11.1

10.5

10.1 20

18,7

00

20,9

00

22,0

00

18,5

00

19,4

00

20,7

00

18,4

00

20,0

00

18,2

00

20,3

0019

,100

20,4

00

17,6

00

13,6

00

13,6

00

14,2

00

12,5

0014

,100

12,7

00

11,2

00

12,9

0012

,100

13,6

00

11,4

00

13,0

00

11,4

00

5,00

0

3,87

0

4,11

0

4,32

0

3,87

0

4,03

0

4,18

0

3,83

0

4,03

0

3,82

0

4,08

0

4,03

0

4,10

0

3,75

0

6,60

0

6,77

0

6,78

0

7,14

0

6,18

0

6,09

0

6,91

0

5,93

0

7,10

0

6,20

0

7,16

0

6,20

0

7,10

0

5,00

0

1,55

0

2,03

0

1,79

0

1,50

01,

520

1,59

0

1,48

0

1,54

0

1,48

0

1,56

0

1,62

0

1,55

0

1,46

0

640

483

626

141

518

507

175

616

194

568

171

543

184

5,00

0

1,46

0

1,27

0

1,26

0

1,23

0

1,04

0

469

2,05

0

498

2,08

0

514

2,20

0

475

2,04

0

1,09

0

570

669

3,33

0

530

515

3,16

0

659

2,44

0

410

2,56

0

554

2,71

0

100

8,12

0

8,37

0

8,61

0

7,85

08,

280

8,52

07,

930

8,25

07,

890

8,31

08,

220

8,37

0

7,59

0

30,6

0030

,400

30,6

0027

,100

31,3

0031

,200

27,9

00

31,0

0027

,400

31,4

0027

,800

32,5

00

27,7

00

5,00

0

Characterization

o and

Mower

Reserv o ~

CO £.

»

0CD

»

^ a

o 30

= a li'

«<

=O

So

wO

3'

fi)

CO

Q.

CDo

a1 §

'(0

CD

<O

3ro

SO 3 a CO c a. Q) O

CD M CD -» 5' CO so 3 a CD so to O CD Dl

CD CD 3

31 CD

(A CD < O.

Tabl

e C3

. Ch

emic

al c

once

ntra

tions

in la

ke-w

ater

sam

ples

-Con

tinue

d

Site

S*

mp"

Sg

. 1

dept

h3

num

ber1

.^

.

Tota

l de

pth

(ft)

Res

er

voir

2Sa

mpl

e nu

mbe

r

_ B

icar

bona

teC

arbo

nate

as

CO

3 (m

g/L)

Chl

o

ride

(m

g/L)

Fluo

ride

(mg/

L)Su

lfat

e Su

lfid

e (m

g/L)

(m

g/L)

Tota

l di

ssol

ved

solid

s (m

g/L)

Tota

l su

spen

ded

solid

s (m

g/L)

Nitr

ate/

ni

trite

as

N

(mg/

L)

Nitr

ite

(mg/

L)

Dis

solv

ed-C

onti

nued

SW00

992

S WO

109

2

S WO

11 9

2

S WO

129

2

SW03

192

SW03

192

SW03

292

SW03

292

SW03

392

SW03

392

SW03

492

SW03

492

SW03

592

SW03

592

SW03

592

SW03

592

S WO

139

2

S WO

149

2

S WO

159

2

S WO

169

2

SW01

792

SW02

192

SW02

192

SW02

292

SW02

292

SW02

392

SW02

392

SW02

492

SW02

492

S WO

189

2

S WO

199

2

SW02

092

SW02

692

80.0

20.0

65.0

41.0 -- -- 15.5

*

21.0

*

73.5

*. . -- -- 14

.5

35.0

18.5

39.0

8.0*

17.0

*--

30.0

*-- 1.

8

1.0

4.5 1.0

80.0

21.0

65.0

42.0 -- 16.0

17.0

13.5

22.5

75.0 . . -- -- 14.5

36.0

19.0

40.0

9.0

19.0

34.0

3.5

6.0

5.0

1.0


GW

GW

GW

GW

GW

GW

GW

GW

GW

GW

GW

GW M M M M

SW07

100C

H

SW07

101C

H

SW07

102C

H

SW07

103C

H

SW07

022C

H

SW07

219C

H

SW07

221C

H

SW07

023C

H

SW07

024C

H

SW07

222C

HSW

0722

4CH

SW07

025C

H

SW07

225C

H

SW07

026C

H

SW07

028C

H

SW07

029C

H

SW07

104C

H

SW07

105C

H

SW07

106C

H

SW07

107C

H

SW07

108C

H

SW07

205C

H

SW07

007C

H

SW07

206C

H

SW07

008C

H

SW07

207C

H

SW07

009C

H

SW07

208C

H

SW07

010C

H

SW07

109C

H

SW07

110C

H

SW07

111C

H

SW07

012C

H

09-0

8-92

09-0

9-92

09-0

8-92

09-0

9-92

07-2

7-92

10-1

3-92

10-1

4-92

07-3

0-92

07-2

7-92

10-1

3-92

10-1

3-92

07-2

8-92

10-1

4-92

07-2

8-92

07-2

8-92

07-2

8-92

08-3

1-92

09-0

1-92

09-0

1-92

09-0

2-92

09-1

5-92

10-0

2-92

07-1

5-92

10-0

2-92

07-1

5-92

10-0

2-92

07-1

6-92

10-0

2-92

07-1

6-92

09-1

4-92

09-1

4-92

09-1

4-92

07-2

0-92

62.2

51.4

46.9

50.1

49.5

52.8

52.2

50.1

49.4

52.0

52.3

49.3

45.8

49.6

50.6

56.2

43.0

45.7

46.0

45.7

46.9

48.5

44.2

49.0

43.6

48.9

43.6

49.0

42.4

31.8

22.2

39.1

29.1

10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 45 56 43 46

9.0

8.0

8.4

8.1

8.3

7.8

8.4

8.2

8.1

7.8

8.0

8.3

7.7

8.2

8.4

9.5

5.1

5.1

5.2

5.3

5.3

5.4

5.4

5.4

5.5

5.6

5.3

5.4

5.1

21.8

21.3

22.1

20.0

0.58

0.56

0.57

0.57

0.59

0.56

0.58

0.57

0.55

0.58

0.57

0.58

0.57

0.55

0.56

0.62

0.51

0.51

0.51

0.52

0.50

0.50

0.53

0.55

0.53

0.54

0.51

0.50

0.51

0.59

0.60

0.59

0.58

39.4

1

39.1

1

45.1

1

39.7

1

39.1

1

41.0

1

41.2

1

38.9

1

38.3

1

41.2

1

41.2

, 1

39.1

1

47.5

1

39.2

1

39.2

1

43.3

1

27.7

1

27.7

1

27.5

1

27.7

1

27.6

1

29.1

1

27.6

1

29.1

1

27.5

1

29.1

1

27.2

1

29.1

1

26.3

1

16.9

16.6

16.1

17.2

1

150

128

126

119

145

109

131

140

150

106

49 143

137

136

141

154

90 68 78 83 113

110

145

110

138

113

146

114

134

134

127

152

132

6 5 9 17 6 5 10 5 5 11 5 5 14 5 5 25 20 44 26 31 22 8 13 10 15 11 16 6 14 10 6

0.1

0.1

0.1

0.1

0.1

0.1

0.1

0.1

0.1

0.1

0.1

0.1

0.1

0.1

0.1

0.2

0.1

0.1

0.1

0.3

0.1

0.1

0.1

0.1

0.1

0.1

0.1

0.1

0.1

0.1

0.1

0.1

0.1

0.1

0.1

0.1

0.1 -- -- -- . . -- -- 0.1

0.1

0.1

0.1

0.1 .. -- -- --

Tabl

e C

3.

Che

mic

al c

once

ntra

tions

in la

ke-w

ater

sam

ples

-Con

tinue

d

Site

Sa

mP|

|n9

num

ber

...,

(ft)

d°

th

Res

er"

Sam

ple

num

ber

_ .

Bic

arbo

nate

nr -

ft(m

g/L)

Car

bona

te

asC

O3

(mg/

L)

Ch'°"

Fl

uorid

e Su

lfate

rtu

G ( m

o/Li

(m

o/Li

Tota

l To

tal

Nitr

ate/

Su

lfide

di

ssol

ved

susp

ende

d ni

trite

N

itrite

(m

g/L)

so

lids

solid

s as

N

(mg/

L)

(mg/

L)

(mg/

L)

(mg/

L)

Dis

solv

ed-C

onti

nued

SW02

692

SW02

792

SW02

792

SW02

892

SW02

892

SW02

992

SW02

992

SW03

092

SW03

092

-- 2.0 -- 2.0 -- 1.0 -- 2.0 --

4.0 -- 4.0

1.0 -- 4.0 --

M M M M M M M M M

SW07

210C

H

SW07

214C

H

SW07

013C

H

SW07

216C

H

SW07

014C

H

SW07

217C

H

SW07

015C

H

SW07

218C

H

SW07

016C

H

10-0

8-92

10-0

8-92

07-2

0-92

10-0

8-92

07-2

0-92

10-0

8-92

07-2

0-92

10-0

8-92

07-2

1-92

Det

ectio

n lim

its

42.8

33.9

10.0

39.4

33.4

41.9

14.8

41.1

18.5 10

38 43 65 37 43 38 55 38 52 10

24.2

23.9

18.8

24.3

19.2

24.1

18.9

25.0

18.4 5

0.63

0.68

0.61

0.67

0.51

0.62

0.63

0.66

0.61

0.10

14.9

15.6

18.6

16.0

16.8

15.3

18.7

15.7

18.6

0.1

1 17

6 7

0.1

1 17

4 5

0.1

1 12

9 5

0.1

1 17

2 7

0.1

1 12

4 5

0.1

1 17

0 6

0.1

1 12

3 5

0.1

1 17

0 12

0.

1

1 17

5 5

0.1

1 10

5

0.1

0.1

Site

nu

mbe

r1

Sam

plin

g de

pth3

(ft

)

Tota

l de

pth

(ft)

Res

er

voir2

Sam

ple

num

ber

Sam

ple

date

Am

mon

ia

(mg/

L)

Orth

o-

phos

phat

e as

P

(mg/

L)

Phos

phor

us

as P

(m

g/L)

Oil

and

grea

se

(mg/

L)

Cya

ni

de

_ .

, tr

ans-

1,3-

Tr

i- ...

.

...

. To

ta

_. .

. . .

V

nyl

Vin

yl

Dic

hlor

o-

chlo

ro-

* . .

'

xyle

nes

.. ac

etat

e ch

lori

de

7 pr

open

e et

hene

Dis

solv

ed C

onti

nued

SW00

992

S WO

109

2

SW01

192

SW01

292

SW03

192

SW03

192

SW03

292

SW03

292

SW03

392

SW03

392

SW03

492

SW03

492

SW03

592

SW03

592

SW03

592

SW03

592

80.0

20.0

65.0

41.0 -- 15.5

*-- --

21.0

*--

73.5

*

80.0

21.0

65.0

42.0

16.0

17.0

13.5

22.5 -- 75.0

SL SL SL SL SL SL SL SL SL SL SL SL SL SL SL SL

SW07

100C

H

SW07

101C

H

SW07

102C

H

SW07

103C

H

SW07

022C

H

SW07

219C

H

SW07

221C

H

SW07

023C

H

SW07

024C

H

SW07

222C

H

SW07

224C

H

SW07

025C

H

SW07

225C

H

SW07

026C

H

SW07

028C

H

SW07

029C

H

09-0

8-92

09-0

9-92

09-0

8-92

09-0

9-92

07-2

7-92

10-1

3-92

10-1

4-92

07-3

0-92

07-2

7-92

10-1

3-92

10-1

3-92

07-2

8-92

10-1

4-92

07-2

8-92

07-2

8-92

07-2

8-92

0.28

0.12

0.12

0.12

0.05

0.05

0.05

0.05

0.05

0.05

0.05

0.05

0.05

0.05

0.05

0.05

0.07

0.05

0.08

0.05

0.05

0.05

0.05

0.05

0.05

0.05

0.05

0.05

0.05

0.05

0.05

0.05

0.05

0.05

0.05

0.05

0.05

0.05

0.05

0.05

0.05

0.05

0.05

0.05

0.05

0.05

0.05

0.06

-- -- -- 8.9

5.0

8.4

5.0

11.3

5.0

5.0

11.5

5.0

11.2

8.8

5.0

10 10 10 10 10 -- -- 10 10 -- -- 10 -- 10 10 10

.. .. .. .. .. .. .. .. .. .. .. .. .. .. .. . .

Tabl

e C

3.

Che

mic

al c

once

ntra

tions

in l

ake-

wat

er s

ampl

es-C

ontin

ued

Dharacteriza

and

Mower

R

lion

of

Selected

Radionuclides in

Sediment and

Surfai

leservoir, Jefferson

Count

y, Colorado, 1992

8 0) 5' W 0) 3 Q. to ^ 0) JD O S 5 (D 3} (D OT

(D

Site

Sa

Hmp"

n39

. 1

dept

h3

num

ber'

^

SW01

392

14.5

SW

0149

2 35

.0

SW01

592

18.5

SW

0169

2 39

.0

S WO

1792

SW

0219

2 8.

0*

SW02

192

SW02

292

17.0

* SW

0229

2 SW

0239

2 30

.0*

SW02

392

SW02

492

1.8

SW02

492

S WO

1892

1.

0 SW

0199

2 4.

5SW

0209

2 1.

0SW

0269

2SW

0269

2SW

0279

2 2.

0SW

0279

2SW

0289

2 2.

0SW

0289

2SW

0299

2 1 .

0SW

0299

2SW

0309

2 2.

0SW

0309

2

Tota

l _ R

eser

-

14.5

G

W

36.0

G

W

19.0

G

W

40.0

G

W

GW

9.0

GW

GW

19.0

G

W

GW

34.0

G

W

GW

3.5

GW

GW

6.0

M

5.0

M

1.0

M M M

4.0

M M

4.0

M M

1.0

M M

4.0

M M

Det

ectio

n lim

its

Sam

ple

num

ber

SW07

104C

H

SW07

105C

H

SW07

106C

H

SW07

107C

H

SW07

108C

H

SW07

205C

H

SW07

007C

H

SW07

206C

H

SW07

008C

H

SW07

207C

H

SW07

009C

H

SW07

208C

H

SW07

010C

H

SW07

109C

H

SW07

110C

H

SW07

111C

H

SW07

012C

H

SW07

210C

H

SW07

214C

H

SW07

013C

H

SW07

216C

H

SW07

014C

H

SW07

217C

H

SW07

015C

H

SW07

218C

H

SW07

016C

H

Sam

ple

Am

mon

ia

date

(m

g/L)

08-3

1-92

09

-01-

92

09-0

1-92

09

-02-

92

09-1

5-92

10

-02-

92

07-1

5-92

10

-02-

92

07-1

5-92

10

-02-

92

07-1

6-92

10

-02-

92

07-1

6-92

09-1

4-92

09

-14-

9209

-14-

9207

-20-

9210

-08-

9210

-08-

9207

-20-

9210

-08-

9207

-20-

9210

-08-

9207

-20-

9210

-08-

9207

-21-

92

0.12

0.

12

0.12

0.

12

0.05

0.

05

0.05

0.

05

0.05

0.

05

0.05

0.

06

0.05

0.07

0.

050.

050.

110.

050.

050.

050.

050.

050.

050.

050.

050.

05 0.5

Orth

o-

phos

phat

e as

P

(mg/

L)

Phos

phor

us

Oil

and

as P

gr

ease

(m

g/L)

(m

g/L)

Dis

solv

ed-C

ontin

ued

0.05

0.

05

0.06

0.

11

0.05

0.

05

0.05

0.

05

0.09

0.

05

0.05

0.

05

0.06

0.

05

0.05

0.

05

0.05

0.

08

0.07

0.

05

0.07

0.

05

0.05

0.

05

0.05

0.

09

0.07

0.

06

0.05

0.

050.

050.

130.

050.

050.

110.

050.

080.

050.

100.

050.

190.

05

0.05

0.08

0.05

0.05

0.06

0.05

0.07

0.05

0.06

0.05

0.07

0.05

5.0

5.0

5.0

5.0

17.0

5.

0 5.

1 5.

3

5.0

5.0

6.3

5.0

5.5

11.2

8.2

20.2

5.0

19.5 5

Cya

ni

de 10

10

10

10

10 10

10

10

10 10

10 10 10 -- . . 10 10 10 10 10 10

Tota

l xy

lene

s

-- 5 5 5 5 5 5 5 5 5 5 5

trans

-1 ,3

- D

ichl

oro-

pr

open

e

-- 5 5 5 5 5 5 5 5 5 5 5

Tri-

chlo

ro-

ethe

ne

-- 5 5 5 5 5 5 5 5 5 5 5

Vin

yl

acet

ate

-- 10 10 10 10 10 10 10 10 10 10 10

Vin

yl

chlo

ride

-- 10 10 10 10 10 10 10 10 10 10 10

Tabl

e C

3.

Che

mic

al c

once

ntra

tions

in l

ake-

wat

er s

ampl

es-C

ontin

ued

Sam

plin

gSl

!e

! de

pth3

nu

mbe

r ,r

. (ft

)

Tota

l de

pth

(ft)

Res

er

voir2

Sam

ple

num

ber

Sam

ple

date

Alu

m

inum

Ant

i m

ony

Ars

e

nic

Bar

iu

mB

eryl

liu

mC

ad

miu

mC

es

ium

Chr

o

miu

mC

obal

tC

op

per

Iron

Lith

iu

mLe

adM

anga

ne

seM

er

cury

Tota

l

APPENDIX

C

SW00

992

SW01

092

SW01

192

SW01

292

SW03

192

SW03

192

SW03

292

SW03

292

SW03

392

SW03

392

SW03

492

SW03

492

SW03

592

SW03

592

SW03

592

SW03

592

S WO

139

2

S WO

149

2

SW01

592

S WO

169

2

S WO

179

2

SW02

192

SW02

192

SW02

292

SW02

292

SW02

392

SW02

392

SW02

492

SW02

492

S WO

189

2

S WO

199

2

SW02

092

SW02

692

SW02

692

SW02

792

80.0

20.0

65.0

41.0 -- --

15.5

*-- -- --

21.0

*--

73.5

*-- -- -- 14

.5

35.0

18.5

39.0

-- 8.0* --

17.0

*--

30.0

*-- 1.

8 -- 1.0

4.5

1.0

2.0

80.0

21.0

65.0

42.0

-- 16.0

17.0

-- -- 13.5

22.5 -- 75.0 -- -- -- 14.5

36.0

19.0

40.0 -- 9.0 -- 19.0

-- 34.0 -- 3.5 -- 6.0

5.0

1.0

4.0


GW

GW

GW

GW

GW

GW

GW

GW

GW

GW

GW

GW M

M

M

M

M M

SW07

100C

H

SW07

101C

H

SW07

102C

H

SW07

103C

H

SW07

022C

H

SW07

219C

H

SW07

221C

H

SW07

023C

H

SW07

024C

H

SW07

222C

H

SW07

224C

H

SW07

025C

H

SW07

225C

H

SW07

026C

H

SW07

028C

H

SW07

029C

H

SW07

104C

H

SW07

105C

H

SW07

106C

H

SW07

107C

H

SW07

108C

H

SW07

205C

H

SW07

007C

H

SW07

206C

H

SW07

008C

H

SW07

207C

H

SW07

009C

H

SW07

208C

H

SW07

010C

H

SW07

109C

H

SW07

110C

H

SW07

111C

H

SW07

012C

H

SW07

210C

H

SW07

214C

H

09-0

8-92

09-0

9-92

09-0

8-92

09-0

9-92

07-2

7-92

10-1

3-92

10-1

4-92

07-3

0-92

07-2

7-92

10-1

3-92

10-1

3-92

07-2

8-92

10-1

4-92

07-2

8-92

07-2

8-92

07-2

8-92

08-3

1-92

09-0

1-92

09-0

1-92

09-0

2-92

09-1

5-92

10-0

2-92

07-1

5-92

10-0

2-92

07-1

5-92

10-0

2-92

07-1

6-92

10-0

2-92

07-1

6-92

09-1

4-92

09-1

4-92

09-1

4-92

07-2

0-92

10

-08-

92

10-0

8-92

388

187

566

764

160

238

354

165

66 249

184

80 434

65 160

1,54

0

1,69

0

1,36

0

895

1,16

0

773

546

1,20

0

516

1,74

0

653

2,30

0

529

3,14

0

92

26

196

88 73 166

14.8

14.8

14.8

14.8

16.5

14.8

14.8

16.5

16.5

14.8

14.8

16.5

14.8

16.5

16.5

16.5

16.5

14.8

14.8

14.8

14.8

14.8

16.5

14.8

16.5

14.8

16.5

14.8

16.5

14.8

14.8

14.8

16.5

14.8

14.8

3.2

3.2

3.2

3.2

2.2

3.2

3.2

2.9

2.2

3.2

3.2

2.6

3.2

2.6

2.6

2.6

2.9

1.9

1.9

1.9

1.9

2.9

2.4

2.2

2.4

2.2

2.4

2.2

2.4

4.6

4.5

4.3

5.1

5.0

6.0

39.8

34.6

38.7

38.5

34.9

35.7

37.0

34.5

33.6

37.1

35.7

33.9

31.0

34.3

35.0

44.5

45.9

38.7

38.6

38.9

43.0

41.7

41.8

45.0

43.7

45.9

46.4

41.8

46.7

29.9

28.3

34.7

25.2

26.4

26.0

0.3

0.3

0.3

0.3

0.4

0.3

0.3

0.4

0.4

0.3

0.3

0.4

0.3

0.4

0.4

0.4

0.4

0.3

0.3

0.3

0.3

0.3

0.4

0.3

0.4

0.3

0.4

0.3

0.4

0.3

0.3

0.3

0.4

0.3

0.3

1.5

1.5

1.5

1.5

1.4

1.5

1.5

1.4

1.4

1.5

1.5

1.4

1.5

1.4

1.4

1.4

1.4

1.5

1.5

1.5

1.5

1.5

1.4

1.5

1.4

1.5

1.9

1.5

1.4

1.5

1.5

1.5

1.4

1.5

1.5

50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 90 50 50 50 50 50 50 50 50

50

50

80

50 50

2.6

2.6

2.6

2.6

3.7

2.6

2.8

3.7

3.7

2.6

2.6

3.7

2.6

3.7

3.7

3.7

3.7

2.6

2.6

2.6

2.6

2.6

3.7

2.6

3.7

2.6

3.7

2.6

4.4

2.6

2.6

2.6

3.7

2.6

2.6

1.3

1.3

1.3

1.9

2.3

1.3

1.3

2.3

2.3

1.3

1.3

2.3

1.3

2.3

2.3

2.3

2.3

1.3

1.3

1.5

1.3

1.3

2.3

1.3

2.3

1.6

2.3

2.6

2.3

1.3

1.3

1.3

2.3

1.3

1.3

3.0

4.8

5.8

7.1

4.1 -- 2.8

2.8

4.1 -- 1.9

3.2

-- 3.5

4.7

7.0

6.3

8.5

6.3

7.3

5.9 -- 5.9 -- 4.3 -- 11.8

-- 7.6

1.9

4.5 1.9

3.3

1.9

1.9

382 17

4

511

666

150

204

285

128

88 249

187

88 411

38 142

1,15

0

948

1,18

0

723

938

671

436

1,15

0

457

1,36

0

584

1,64

0

455

2,28

0

139

57

246

220

99 133

4.9

5.5

6.2

8.1

6.8

8.9

7.0

9.0

8.3

6.9

6.0

6.9

8.7

9.5

8.9

8.4

5.6

6.2

6.3

4.3

7.3

8.0

5.7

8.3

4.3

7.7

6.7

8.7

5.3

7.9

9.4

8.9

8.6

5.8

6.9

3.8

2.5

4.3

3.5

9.9

2.7

2.7

3.3

3.4

2.0

2.5

2.7

3.9

2.2

2.9

8.1

7.4

8.8

6.5

4.4

5.3

3.1

18.5

3.8

14.4

3.8

5.2

3.4

8.3

2.4

2.6

3.1

4.6

2.9

37.2

1580

.0

18.1

127.

0

44.6

12.3

12.7

17.4

11.2

11.0

19.2

12.5

5.5

49.0

5.6

14.7

511.

0

35.1

62.5

31.2

47.5

38.8

21.2

40.5

21.5

41.3

30.9

49.9

25.6

46.9

29.5

24.8

27.8

37.0

11.8

15.0

0.2

0.2

0.2

0.2

0.2

0.1

0.1

0.2

0.2

0.1

0.1

0.2

0.8

0.2

0.2

0.2

0.2

0.2

0.2

0.2

0.2

0.1

0.2

0.1

0.2

0.1

0.2

0.1

0.2

0.2

0.2

0.2

0.2

0.1

0.1

Tabl

e C

3.

Che

mic

al c

once

ntra

tions

in l

ake-

wat

er s

ampl

es-C

ontin

ued

Character!

md

Mowe -«

N

w 5'

(D

3

< a

o F|

3: "

ro »

-i

Q.

(0 _ § 1 °

o'

II - Q

.O

£o

w0

3'

3 </j

Q.

(Do

a"-^

3<

0 <D

-(O

-*

ro 5

-Q> 3 a

w 3. Q> O (D $ Q> S" 5' w 3 a (D 1 m 0

3 D> (D (0 <D 3 3) (D

(0 (D O

Site

nu

mbe

r1

Sam

plin

g de

pth

3 (f

t)

Tota

l de

pth

(ft)

Res

er

voir

2Sa

mpl

e Sa

mpl

e nu

mbe

r da

teA

lum

in

umA

nti

mon

yA

rse

ni

cB

ar

ium

Ber

yl

lium

Cad

m

ium

Ces

iu

mC

hro

m

ium

Cob

alt

Cop

" Ir

on

per

Lith

- .

. M

anga

- .

Lea

d M

ium

ne

seM

er

cury

Tot

al-C

ontin

ued

SW02

792

SW02

892

SW02

892

SW02

992

SW02

992

SW03

092

SW03

092

.. 2.0 -- 1.0

2.0 --

4.0 -- 1.0

4.0 --

M M M M M M M

SW07

013C

H

07-2

0-92

SW07

216C

H

10-0

8-92

SW07

014C

H

07-2

0-92

SW07

217C

H

10-0

8-92

SW07

015C

H

07-2

0-92

SW07

218C

H

10-0

8-92

SW07

016C

H

07-2

1-92

Det

ectio

n lim

its

Site

nu

mbe

r1

Sam

plin

g de

pth3

(ft

)

Tota

l de

pth

(ft)

Res

er

voir

2Sa

mpl

e Sa

mpl

e nu

mbe

r da

te

48 72 76 62 36 189

79 200

Mol

yb

denu

m

16.5

14.8

16.5

14.8

16.5

14.8

16.5

60

Nic

kel

4.1

5.5

5.7

5.4

3.1

6.6

4.0 10

Sele

n

ium

22.2

24.9

24.8

25.1

20.4

26.8

23.0

200

Sil

ver

0.4

0.3

0.4

0.3

0.4

0.3

0.4 5

Stro

n

tium

1.4

9.0

4.0

1.5

1.4

1.5

1.4 5

Thal

liu

m

50 50 60 50 50 50 50 1,00

0

Tin

3.7

65.8

3.7

2.6

3.7

2.6

3.7 10

Van

a

dium

2.3 1.3

2.3 1.3

2.3 1.3

2.3 50

Zin

c

2.4

1.9

2.4

1.9

2.4

2.2

2.4

25

Cal

ci

um

110

328

163

129

82 206

126

100

Mag

ne

sium

6.8

5.9

5.2

6.4

6.4

8.0

8.6

100

Pota

s

sium

4.8

3.8

3.4

3.6

3.2

17.0

5.3 3 Si

li

con

20.4

15.2

32.6

12.1

18.0

14.8

26.5 15 Sodi

um

0.2

0.1

0.3

0.1

0.2

0.1

0.2 0 Cya

ni

de

Tot

al-C

onti

nued

SW00

992

SW01

092

SW01

192

SW01

292

SW03

192

SW03

192

SW03

292

SW03

292

SW03

392

SW03

392

SW03

492

SW03

492

SW03

592

SW03

592

SW03

592

SW03

592

SW01

392

SW01

492

SW01

592

SW01

692

SW01

792

80.0

20.0

65.0

41.0 --

15.5

*

--

21.0

*.

.

73.5

*-- 14

.5

35.0

18.5

39.0

80.0

21.0

65.0

42.0 -- 16.0

17.0

13.5

22.5 . .

75.0

-- ... 14.5

36.0

19.0

40.0


GW

GW

GW

GW

SW07

100C

H

09-0

8-92

SW07

101C

H

09-0

9-92

SW07

102C

H

09-0

8-92

SW07

103C

H

09-0

9-92

SW07

022C

H

07-2

7-92

SW07

219C

H

10-1

3-92

SW07

221C

H

10-1

4-92

SW07

023C

H

07-3

0-92

SW07

024C

H

07-2

7-92

SW07

222C

H

10-1

3-92

SW07

224C

H

10-1

3-92

SW07

025C

H

07-2

8-92

SW07

225C

H

10-1

4-92

SW07

026C

H

07-2

8-92

SW07

028C

H

07-2

8-92

SW07

029C

H

07-2

8-92

SW07

104C

H

08-3

1-92

SW07

105C

H

09-0

1-92

SW07

106C

H

09-0

1-92

SW07

107C

H

09-0

2-92

SW07

108C

H

09-1

5-92

7.7

3.3

4.5

5.9

5.8

6.6

3.4

5.5

4.4

4.4

3.8

5.2

5.3

4.7

5.7

7.4

4.5

4.6

4.8

3.6

4.7

3 3 3 3 6 3 5 6 6 33 3 6 5 6 6 6 6 3 3 3 3

3.9

3.9

3.9

3.9

5.3

3.9

3.9

3.8

2.8

3.9

3.9

3.7

3.9

3.7

3.7

3.7

3.8

2.9

2.9

2.9

2.9

-- -- 2.3

3.6

3.6

2.3

2.3

3.6

3.6

2.3

3.6

2.3

2.3

2.3

2.3

3.6

3.6

3.6

3.6

168

152

155

154

151

158

161

152

151

163

160

150

146

156

156

174

133

128

129

123

140

1.3

1.3

1.3

1.3

0.9

1.3

1.3

1.3

0.9

1.3

1.3

1.6

1.3

1.6

1.6

1.6

1.7

3.8

3.8

3.8

3.8

6.2

6.2

6.2

6.2

12.5

6.2

6.2

12.5

12.5

6.2

6.2

12.5

6.2

12.5

12.5

12.5

12.5

6.2

6.2

6.2

6.2

2.5

2.5

2.5

2.5

3.3

2.5

2.5

3.3

3.3

2.5

2.5

3.3

2.5

3.3

3.3

3.3

3.3

3.4

3.1

2.8

2.5

26.8

20.8

22.0

28.0

10.1

16.8

184.

0

16.2

12.8

51.5

15.1

10.1

18.1

10.1

14.6

37.5

27.0

37.1

23.4

27.0

16.2

24,0

00

21,7

00

22,0

00

21,9

00

22,4

00

22,2

00

22,5

00

22,0

00

22,6

00

22,8

00

22,3

00

22,9

00

12,6

00

23,4

00

23,6

00

26,1

00

20,3

00

18,7

00

19,0

00

1^8,

000

1*8,

700

5,58

0

5,04

0

5,20

0

5,19

0

5,13

0

5,16

0

5,24

0

5,16

0

5,17

0

5,32

0

5,18

0

5,22

0

5,52

0

5,31

0

5,31

0

6,11

0

4,34

0

4,13

04,

100

3,95

03,

980

1,97

0

1,75

0

1,85

0

1,89

0

1,78

0

1,90

0

1,94

0

1,80

0

1,80

0

1,92

0

1,87

0

1,78

0

2,18

0

1,82

0

1,83

0

2,25

0

1,85

0

1,81

0

1,70

0

1,65

0

1,61

0

2,62

0

1,43

0

1,94

0

1,71

0

1,21

0

1,01

0

957

1,28

0

1,23

0

970

974

1,18

0

1,14

0

1,19

0

1,43

0

2,24

0

1,59

0

1,56

01,

450

1,44

0

1,25

0

12,1

00

11,2

00

11,4

00

11,3

00

11,4

00

11,4

00

11,5

00

11,6

00

11,4

00

11,7

00

11,5

00

11,8

00

415,

000

11,6

00

11,7

00

13,1

00

8,58

0

7,85

0

8,03

0

7,59

0

8,03

0

-- -- -- 10 10 -- 10 10 .. 22 -- -- -- -- --

Tabl

e C

3.

Che

mic

al c

once

ntra

tions

in la

ke-w

ater

sam

ples

-Con

tinue

d

Sam

plin

g num

tr'

**

*To

tal

dept

h (ft

)

Res

er

voir

2Sa

mpl

e nu

mbe

rSa

mpl

e M

olyb

- da

te

denu

mN

icke

lSe

len

iu

mSi

l ve

rSt

ron

tiu

mTh

al

lium

Tin

Van

a

dium

Zinc

Cal

cium

Mag

ne

sium

Pota

s

sium

Sili

co

nSo

di

umCy

a

nide

Tot

al-C

onti

nued

SW02

192

8.0*

SW02

192

SW02

292

17.0

*

SW02

292

SW02

392

30.0

*

SW02

392

SW02

492

1.8

SW02

492

SW01

892

1.0

SW01

992

4.5

SW02

092

1.0

SW02

692

SW02

692

SW02

792

2.0

SW02

792

SW02

892

2.0

SW02

892

SW02

992

1.0

SW02

992

SW03

092

2.0

SW03

092

9.0 -- 19.0

-- 34.0 -- 3.5 -- 6.0

5.0

1.0

-- -- 4.0 -- 4.0 -- 1.0

-- 4.0 --

GW

GW

GW

GW

GW

GW

GW


SW07

205C

H

SW07

007C

H

SW07

206C

H

SW07

008C

H

SW07

207C

H

SW07

009C

H

SW07

208C

H

SW07

010C

H

SW07

109C

H

SW07

110C

H

SW07

111C

H

SW07

012C

H

SW07

210C

H

SW07

214C

H

SW07

013C

H

SW07

216C

H

SW07

014C

H

SW07

217C

H

SW07

015C

H

SW07

218C

H

SW07

016C

H

10-0

2-92

07-1

5-92

10-0

2-92

07-1

5-92

10-0

2-92

07-1

6-92

10-0

2-92

07-1

6-92

09-1

4-92

09-1

4-92

09-1

4-92

07-2

0-92

10-0

8-92

10-0

8-92

07-2

0-92

10-0

8-92

07-2

0-92

10-0

8-92

07-2

0-92

10-0

8-92

07-2

1-92

Det

ectio

n lim

its

8.2

4.0

6.0

5.9

5.2

7.5

5.5

5.8 1.7

1.9

1.7

2.7

2.8 1.7

2.7

4.4

2.7

2.4

2.7

2.3

2.7

200

3 6 3 6 3 7 3 6 3 10 3 6 3 3 6 23 6 3 6 3 6 40

3.6

3.6

3.6

3.6

3.6

3.1

3.6

3.1

2.9

2.9

2.9

3.1

3.8

3.8

3.1

3.8

3.1

3.8

3.1

3.8

3.1 5

3.6

2.3

3.6

2.3

3.6

2.3

3.6

2.3

3.6

3.6

3.6

2.3

3.6

3.6

2.3

3.6

2.3

3.6

2.3

3.6

2.3 10

139

125

146

128

145

125

146

123

132

131

131

123

124

120

115

121

122

123

115

124

114

200

3.8

4.3

3.8

4.3

3.8

4.3

3.8

4.3

3.8

3.8

3.8

0.9

1.3

1.3

4.5 1.3

4.5 1.3

0.9

3.8

0.9 10

6.2

12.5

9.7

12.5

7.0

12.5

6.2

12.5

6.2

6.5

6.2

12.5

6.2

6.2

12.5

6.2

12.5

6.2

12.5

6.2

12.5

200

2.5

4.7

2.5

6.7

3.0

4.2

2.5

6.1

2.5

2.6

6.4

3.3

2.5

4.8

3.3

3.8

3.3

3.0

3.3

2.5

3.3 50

27.1

50.2

15.2

40.7

22.3

44.0

13.8

44.4

13.9

7.8

9.4

18.0

5.7

5.7

10.1

5.7

17.2

5.7

10.1

6.6

11.9

20

19,6

00

17,9

00

20,3

00

18,2

00

20,3

00

18,2

00

20,1

00

17,7

00

13,1

00

13,3

00

13,9

00

12,6

00

13,5

00

12,6

00

11,2

00

12,9

00

12,3

00

13,4

00

11,1

00

12,8

00

12,1

00

5,00

0

3,98

0

3,93

0

4,16

0

4,04

0

4,15

0

4,16

0

4,13

0

4,17

0

6,35

0

6,61

0

6,55

0

7,25

0

6,00

0

5,87

0

7,13

0

5,82

0

7,34

0

5,97

0

7,15

0

6,12

0

7,23

0

5,00

0

1,62

0

1,58

0

1,62

0

1,73

0

1,67

0

2,03

01,

610

1,96

0

587

536

640

217

377

740

180

540

147

540

164

592

204

5,00

0

675

3,52

0

673

2,44

0

776

2,62

0

700

2,60

0

968

460

560

3,25

0

501

372

2,85

0

592

2,05

0

348

2,39

048

7

2,66

0

100

8,10

0

7,75

0

8,62

0

7,80

0

8,72

0

7,93

0

8,47

0

7,71

0

29,4

00

29,6

00

29,2

00

27,0

00

30,8

00

29,8

00

27,4

00

30,5

00

27,3

00

30,5

00

27,6

00

31,2

00

27,7

00

5,00

0

10 -- 10 -- 10 -- 10 -- -- -- -- 10 10 -- 10 -- 10 -- -- -- 10

>

TJ

TJ

m z o X o

Tabl

e C

3. C

hem

ical

con

cent

ratio

ns in

lake

-wat

er s

ampl

es-C

ontin

ued

Characterization

ind

Mower

Rese i s,

:; (

/>-

<o

||

jjj

Q.

0

=03

D> 0 si ll - S

og

o w

o 5'

3 c/>

Q.

(DO

Q

. -

t ^

S §

ro -

» Q) 3 Q.

1 O (D Q)

0 5' of Q.

< D) JO O 5 D) (D CO

<D 5 9 (D (0 (D 0.

Site

nu

mbe

r1

SW00

992

S WO

109

2

S WO

11 9

2

SW01

292

SW03

192

SW03

192

SW03

292

SW03

292

SW03

392

SW03

392

SW03

492

SW03

492

SW03

592

SW03

592

SW03

592

SW03

592

SW01

392

SW01

492

S WO

159

2

S WO

169

2

SW01

792

SW02

192

SW02

192

SW02

292

SW02

292

SW02

392

SW02

392

SW02

492

SW02

492

S WO

189

2

SW01

992

SW02

092

SW02

692

SW02

692

SW02

792

SW02

792

Sam

plin

g de

pth3

(ft

)

80.0

20.0

65.0

41.0

15.5

*

-- --

21.0

*

73.5

*. . -- -- 14

.5

35.0

18.5

39.0 - 8.

0* -- 17.0

*--

30.0

*

1.8

1.0

4.5 1.0 -- 2.0

Tota

l de

pth

(ft)

80.0

21.0

65.0

42.0 . .

16.0

17.0 -- 13.5

22.5

75.0 . _ -- -- 14.5

36.0

19.0

40.0 - 9.0 -- 19.0 -- 34.0 -- 3.5

6.0

5.0

1.0

-- -- 4.0

Pest

icid

e V

olat

ile o

rgan

icR

eser

vo

ir2


GW

GW

GW

GW

GW

GW

GW

GW

GW

GW

GW

GW M M M M M M M

Sam

ple

num

ber

SW07

100C

H

SW07

101C

H

SW07

102C

H

SW07

103C

H

SW07

022C

H

SW07

219C

H

SW07

221C

H

SW07

023C

HSW

0702

4CH

SW07

222C

H

SW07

224C

H

SW07

025C

HSW

0722

5CH

SW07

026C

H

SW07

028C

H

SW07

029C

H

SW07

104C

H

SW07

105C

H

SW07

106C

H

SW07

107C

H

SW07

108C

H

SW07

205C

H

SW07

007C

H

SW07

206C

H

SW07

008C

H

SW07

207C

H

SW07

009C

H

SW07

208C

H

SW07

010C

H

SW07

109C

H

SW07

110C

HSW

0711

1CH

SW07

012C

H

SW07

210C

HSW

0721

4CH

SW07

013C

H

Sam

ple

date

09-0

8-92

09-0

9-92

09-0

8-92

09-0

9-92

07-2

7-92

10-1

3-92

10-1

4-92

07-3

0-92

07-2

7-92

10-1

3-92

10-1

3-92

07-2

8-92

10-1

4-92

07-2

8-92

07-2

8-92

07-2

8-92

08-3

1-92

09-0

1-92

09-0

1-92

09-0

2-92

09-1

5-92

10-0

2-92

07-1

5-92

10-0

2-92

07-1

5-92

10-0

2-92

07-1

6-92

10-0

2-92

07-1

6-92

09-1

4-92

09-1

4-92

09-1

4-92

07-2

0-92

10-0

8-92

10-0

8-92

07-2

0-92

Atr

azin

e

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

1,1,

1-

1,1,

2,2-

1,

1,2-

1,

1-

1,1-

Si

maz

ine

Tri

chlo

ro-

Tet

rach

loro

- T

rich

loro

- D

ichl

oro-

D

ichl

oro-

et

hane

et

hane

et

hane

et

hane

et

hene

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

5 555

5

0.5

5 555

5

0.5

5 555

50.

5 5

555

5

1,2-

D

ichl

oro-

et

hane

.. -- -- -- . . .. -- -- -- -- -- -- -- -- -- -- -- 5 5 5 5

Tabl

e C

3. C

hem

ical

con

cent

ratio

ns in

lake

-wat

er s

ampl

es-C

ontin

ued

Site

nu

mbe

r1

SW02

892

SW02

892

SW02

992

SW02

992

SW03

092

SW03

092

Sam

plin

g de

pth3

(f

t)

2.0 -- 1.0

-- 2.0

--

Tota

l de

pth

(ft)

4.0 -- 1.0

-- 4.0

--

Res

er

voir

2

M M M M M M

Sam

ple

num

ber

SW07

216C

H

SW07

014C

H

SW07

217C

H

SW07

015C

H

SW07

218C

H

SW07

016C

H

Det

ectio

n lim

its

Pest

icid

eSa

mpl

e da

te

Atr

azin

e Si

maz

ine

10-0

8-92

0.

5 0.

5

07-2

0-92

0.

5 0.

5

10-0

8-92

0.

5 0.

5

07-2

0-92

0.

5 0.

5

10-0

8-92

0.

5 0.

5

07-2

1-92

0.

5 0.

5

0.5

0.5

Vol

atile

org

anic

1,1,

1-

1,1,

2,2-

1,

1,2-

1,

1-

1,1-

1,

2-

Tri

chlo

ro-

Tet

rach

loro

- T

rich

loro

- D

ichl

oro-

D

ichl

oro-

D

ichl

oro-

et

hane

et

hane

et

hane

et

hane

et

hene

et

hane

55

55

5

5

55

55

5

5

55

555

5

55

555

5

55

55

5

5

55

55

5

5

55

55

5

5

Site

nu

mbe

r1

SW00

992

SW01

092

SW01

192

SW01

292

SW03

192

SW03

192

SW03

292

SW03

292

SW03

392

SW03

392

SW03

492

SW03

492

SW03

592

SW03

592

SW03

592

SW03

592

SW01

392

SW01

492

SW01

592

SW01

692

SW01

792

Sam

plin

g de

pth

3 (f

t)

80.0

20.0

65.0

41.0 -- --

15.5

*-- -- --

21.0

*

73.5

*-- -- -- 14

.5

35.0

18.5

39.0 -

Tota

l de

pth

(ft)

80.0

21.0

65.0

42.0 -- 16.0

17.0

-- -- 13.5

22.5

75.0 -- -- -- 14.5

36.0

19.0

40.0 -

Res

er

voir

2


GW

GW

GW

GW

Sam

ple

num

ber

SW07

100C

H

SW07

101C

H

SW07

102C

H

SW07

103C

H

SW07

022C

H

SW07

219C

H

SW07

221C

H

SW07

023C

H

SW07

024C

H

SW07

222C

H

SW07

224C

H

SW07

025C

H

SW07

225C

H

SW07

026C

H

SW07

028C

H

SW07

029C

H

SW07

104

CH

SW07

105C

H

SW07

106C

H

SW07

107C

H

SW07

108C

H

Sam

ple

~\ 2-

12

- da

te

Dic

hlor

o-

Dic

hlor

o-

ethe

ne

prop

ane

09-0

8-92

09-0

9-92

09-0

8-92

09-0

9-92

07-2

7-92

10-1

3-92

10-1

4-92

07-3

0-92

07-2

7-92

10-1

3-92

10-1

3-92

07-2

8-92

10-1

4-92

07-2

8-92

07-2

8-92

07-2

8-92

08-3

1-92

09-0

1-92

09-0

1-92

09-0

2-92

09-1

5-92

Vol

atile

org

anic

2-

2-

4-M

ethy

l- .

A _

Bro

mo-

_

. ..

« .

Ace

tone

B

enze

ne

....

.. B

utan

one

Hex

anon

e 2-

pent

anon

e di

chlo

rom

etha

ne

.. .. .. .. .. .. . . -. .. .. .. .. .. .. .. -- . . .. .. -. -.

Tabl

e C

3.

Che

mic

al c

once

ntra

tions

in l

ake-

wat

er s

ampl

es-C

ontin

ued

Characterization

of

Selected

Radionuclides

in

Sedii

and

Mower

Reservoir, Jefferson

Count

y, Colorado,

_k

H<0

9

J8 2

.r&

r+

Q

> 3 a 3. Q>

O (D 1 5' 1 a

«; , ^

h"9 £

X ---

number

(S)

(ft) w

SW

0219

2

SW

0219

2

SW

0229

2

SW

0229

2

SW

0239

2

SW

0239

2

SW

0249

2

SW

0249

2

S WO

189

2

SW

0199

2

SW

0209

2

SW

0269

2

SW

0269

2

SW

0279

2

SW

0279

2

SW

0289

2

SW

0289

2

SW

0299

2

SW

0299

2

SW

0309

2

SW

0309

2

8.0*

17.0

*

30.0

*

1.8

1.0

4.5

1.0

2.0 -- 2.0

1.0

-- 2.0 . .

9.0

19.0

34.0

3.5

6.0

5.0

1.0

4.0 -- 4.0

1.0

-- 4.0 . .

GW

GW

GW

GW

GW

GW

GW

GW M

M

M M M M M M M M M M M

Vol

atile

org

anic

Sam

ple

Sam

ple

12-

12-

num

ber

date

oi

ch'lo

ro-

Dic

hlor

o-

ethe

ne

prop

ane

SW07

205C

H

10-0

2-92

SW07

007C

H

07-1

5-92

SW07

206C

H

10-0

2-92

SW07

008C

H

07-1

5-92

SW07

207C

H

10-0

2-92

SW07

009C

H

07-1

6-92

SW07

208C

H

10-0

2-92

SW07

010C

H

07-1

6-92

SW07

109C

H

09-1

4-92

SW07

110C

H

09-1

4-92

SW07

111C

H

09-1

4-92

SW07

012C

H

07-2

0-92

SW07

210C

H

10-0

8-92

SW07

214C

H

10-0

8-92

SW07

013C

H

07-2

0-92

SW07

216C

H

10-0

8-92

SW07

014C

H

07-2

0-92

SW07

217C

H

10-0

8-92

SW07

015C

H

07-2

0-92

SW07

218C

H

10-0

8-92

SW07

016C

H

07-2

1-92

<* D

etec

tion

limits

r 0> £ . <5 D) 5 (D 30

(D

V) (D 2 0.

-- 5 5 5 5 5 5 5 5 5 5 5

-- 5 5 5 5 5 5 5 5 5 5 5

2~

2~

4-M

ethy

l- A

ceto

ne

Ben

zene

B

rom

o-

But

anon

e H

exan

one

2-pe

ntan

one

dich

loro

met

hane

--

10

10

10

10

10 10

10

10 10

10

10 10

10

10 10

10

10

-- 10 10

10

10

10

10 10

10

10 10

10

10 10

10

10 10

10

-- 5 5 5 5 5 5 5 5 5 5 5

-- 5 5 5 5 5 5 5 5 5 5 5

Vol

atile

org

anic

Site

nu

mbe

r1

SW00

992

S WO

109

2

SW01

192

S WO

129

2

SW03

192

SW

0319

2

Sam

plin

g de

pth3

(ft

)

80.0

20.0

65.0

41.0 --

Tota

l de

pth

(ft)

80.0

21.0

65.0

42.0 -- 16.0

Res

er

voir2 SL SL SL SL SL SL

Sam

ple

Sam

ple

num

ber

date

SW07

100C

H

09-0

8-92

SW07

101C

H

09-0

9-92

SW07

102

CH

09

-08-

92

SW07

103C

H

09-0

9-92

SW07

022C

H

07-2

7-92

SW07

219C

H

10-1

3-92

Bro

mof

orm

-- -- --

Bro

mo-

m

etha

ne

-- -- --

_ .

Car

bon

Car

bon

disu

lfid

e *,

"ch

lori

de. . .. .. .. . .

Chl

oro-

C

hlor

o-

benz

ene

etha

ne

.. .. .. .. . .

Chl

orof

orm

-- -- -- --

Chl

oro-

m

etha

ne

-- -- -- --

Tabl

e C

3.

Che

mic

al c

once

ntra

tions

in l

ake-

wat

er s

ampl

es-C

ontin

ued

o m z

o X o -J 01

Site

nu

mbe

r1

SW03

292

SW03

292

SW03

392

SW03

392

SW03

492

SW03

492

SW03

592

SW03

592

SW03

592

SW03

592

S WO

139

2

S WO

149

2

S WO

159

2

S WO

169

2

S WO

179

2

SW02

192

SW02

192

SW02

292

SW02

292

SW02

392

SW02

392

SW02

492

SW02

492

S WO

189

2

S WO

199

2

SW02

092

SW02

692

SW02

692

SW02

792

SW02

792

SW02

892

SW02

892

SW02

992

SW02

992

SW03

092

SW03

092

Sam

plin

g de

pth3

(ft

)

15.5

*-- -- --

21.0

*--

73.5

*-- -- -- 14

.5

35.0

18.5

39.0

-- 8.0* --

17.0

*--

30.0

*

1.8

-- 1.0

4.5 1.0

-- -- 2.0

-- 2.0

1.0

2.0

--

Tota

l de

pth

(ft)

17.0

-- -- 13.5

22.5 -- 75.0 -- -- -- 14.5

36.0

19.0

40.0 -- 9.0 -- 19.0

-- 34.0 -- 3.5 -- 6.0

5.0

1.0

-- -- 4.0

4.0 1.0

4.0

Res

er

voir2

SL SL SL SL SL SL SL SL SL SL GW

GW

GW

GW

GW

GW

GW

GW

GW

GW

GW

GW

GW M M M M M M M M M M

M M M

Sam

ple

num

ber

SW07

221C

H

SW07

023C

H

SW07

024C

H

SW07

222C

H

SW07

224C

H

SW07

025C

H

SW07

225C

H

SW07

026C

H

SW07

028C

H

SW07

029C

H

SW07

104C

H

SW07

105C

H

SW07

106C

H

SW07

107C

H

SW07

108C

H

SW07

205C

H

SW07

007C

H

SW07

206C

H

SW07

008C

H

SW07

207C

H

SW07

009C

H

SW07

208C

H

SW07

010C

H

SW07

109C

H

SW07

110C

H

SW07

111C

H

SW07

012C

H

SW07

210C

H

SW07

214C

H

SW07

013C

H

SW07

216C

H

SW07

014C

H

SW07

217C

H

SW07

015C

H

SW07

218C

H

SW07

016C

H

Det

ectio

n lim

its

Sam

ple

date

r.

* B

rom

o-

aaie

B

rom

ofor

m

10-1

4-92

07-3

0-92

07-2

7-92

10-1

3-92

10-1

3-92

07-2

8-92

10-1

4-92

07-2

8-92

07-2

8-92

07-2

8-92

08-3

1-92

09-0

1-92

09-1

0-92

09-0

2-92

09-1

5-92

10-0

2-92

07-1

5-92

10-0

2-92

07-1

5-92

10-0

2-92

07-1

6-92

10-0

2-92

07-1

6-92

09-1

4-92

09-1

4-92

09-1

4-92

07-2

0-92

5

10

10-0

8-92

5

10

10-0

8-92

5

10

07-2

0-92

5

10

10-0

8-92

5

10

07-2

0-92

5

10

10-0

8-92

5

10

07-2

0-92

5

10

10-0

8-92

5

10

07-2

1-92

5

10

5 10

Vol

atile

org

anic

Car

bon

Cteu

a°-n

C

hlor

°-

Chl

or°-

C

hlor

ofor

m

Chl

or°-

di

sulf

ide

chlo

ride

be

nzen

e et

hane

m

etha

ne

.. .. .. .. .. .. .. .. .. -- .. .. .. .. .- .. . . .. .. . . .. .. -- . . . . .. 5 5

5 10

5

10

5 5

5 10

5

10

5 5

5 10

5

10

5 5

5 10

5

10

5 5

5 10

5

10

5 5

5 10

5

10

5 5

5 10

5

10

5 5

5 10

5

10

5 5

5 10

5

10

5 5

5 10

5

10

5 5

5 10

5

10

3 5

a 5

> S

3 :terization

< Dwer Reser <

^§

w w.3J

2

. 0

®

5

Q.

O

3D3

8.o

5'

II - a

O 5

52.

o

5'0)

CO

a. <

Do

a- 3

'U>

(D

N> 2

.0) 3 a CO c 3

.Q

) 0 (D Q

) -t 5' CO 5T a < Q)

JO O 3 3. (D w <D 3 3J (D (D O.

Tab

le C

3.

Site

nu

mbe

r1

SW00

992

SW01

092

S W01

1 92

S WO

129

2

SW03

192

SW03

192

SW03

292

SW03

292

SW03

392

SW03

392

SW03

492

SW03

492

SW03

592

SW03

592

SW03

592

SW03

592

SW01

392

SW01

492

SW01

592

SW01

692

SW01

792

SW02

192

SW02

192

SW02

292

SW02

292

SW02

392

SW02

392

SW02

492

SW02

492

SW01

892

S WO

199

2

SW02

092

SW02

692

SW02

692

SW02

792

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80.0

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65.0

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-- 2.0

80.0

21.0

65.0

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16.0

17.0

-- -- 13.5

22.5

75.0

14.5

36.0

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40.0 -- 9.0 -- 19.0

34.0

-- 3.5

6.0

5.0

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Res

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voir

2


GW

GW

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SW07

103C

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SW07

022C

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SW07

219C

H

SW07

221C

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SW07

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SW07

024C

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SW07

222C

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SW07

224C

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SW07

025C

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SW07

225C

H

SW07

026C

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SW07

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SW07

029C

H

SW07

104C

H

SW07

105C

H

SW07

106C

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SW07

107C

H

SW07

108C

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SW07

205C

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SW07

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SW07

206C

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SW07

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SW07

207C

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SW07

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SW07

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SW07

109C

H

SW07

110C

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SW07

111C

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09-0

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07-3

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10-1

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09-9

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09-9

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APPENDIX C 77

U.S. GOVERNMENT PRINTING OFFICE: 1996 - 774-216 / 00075 REGION NO. 8

characterization of selected radionuclides in … · 2011. 1. 26. · characterization of selected...

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